**Core Concept**
Meningiomas are a type of primary brain tumor that arise from the meninges, the protective membranes surrounding the brain and spinal cord. They are generally slow-growing and often benign in nature.

**Why the Correct Answer is Right**
Meningiomas have a high cure rate following treatment due to their benign nature and slow growth. The majority of meningiomas can be successfully treated with surgery, radiation, or a combination of both. In fact, studies have shown that up to 95% of patients with meningiomas can achieve a cure or significant improvement in their condition following treatment. This is because meningiomas tend to grow slowly and can be completely removed during surgery, reducing the risk of recurrence.

**Why Each Wrong Option is Incorrect**
**Option A:** Meningiomas are actually more common in women, with a female-to-male ratio of approximately 2:1. This is likely due to the protective effects of estrogen on the meninges.
**Option B:** Only a small percentage of meningiomas are malignant, with the majority being benign. Malignant meningiomas are aggressive and may require more intensive treatment.
**Option D:** Meningiomas arise from the arachnoid layer of the meninges, but not exclusively. They can also arise from the other layers of the meninges, including the dura mater and the pia mater.

**Clinical Pearl / High-Yield Fact**
Meningiomas are often asymptomatic and may be discovered incidentally on imaging studies. However, when symptoms do occur, they can include headache, seizures, and visual disturbances. It's essential to remember that meningiomas are usually benign and have a high cure rate following treatment.

**✓ Correct Answer: C. 95% cure rate following treatment**