**Core Concept**
The question pertains to the anatomy, pathology, and surgical management of salivary glands. Salivary glands are classified into major (parotid, submandibular, and sublingual) and minor glands, with the latter being more numerous and distributed throughout the oral cavity.

**Why the Correct Answer is Right**
The correct answer highlights the prevalence and characteristics of minor salivary gland tumors. Minor salivary glands are more numerous, with over 400 minor glands scattered throughout the oral cavity. This is in contrast to the major salivary glands, which are fewer in number. Additionally, minor salivary gland tumors are more likely to be malignant (about 60-70% are malignant) compared to parotid gland tumors, which are predominantly benign (about 80-90% are benign).

**Why Each Wrong Option is Incorrect**
**Option A:** This statement is factually correct, but not directly related to the question about salivary gland tumors. Minor salivary glands are indeed numerous, but this fact is not relevant to the question about tumor prevalence.
**Option B:** This statement is incorrect because the majority of parotid tumors are benign, not malignant. Only about 20-30% of parotid tumors are malignant.
**Option C:** This statement is incorrect because minor salivary gland tumors are more likely to be malignant, not 90% of them.
**Option D:** While superficial parotidectomy is a surgical procedure, it is not typically performed for all parotid tumors. The choice of surgical procedure depends on the tumor's location, size, and histology.
**Option E:** Warthin's tumor is indeed a type of benign tumor, but it is more commonly associated with the parotid gland, not the minor salivary glands.

**Clinical Pearl / High-Yield Fact**
Warthin's tumor is a type of benign tumor that typically presents in the parotid gland, and is more common in men. It is a good example of a benign tumor that can mimic malignant features on imaging, highlighting the importance of histological diagnosis in the management of salivary gland tumors.

**Correct Answer:** A.