**Core Concept**
Occupational cancers refer to malignancies arising from prolonged exposure to carcinogenic substances in the workplace. These cancers are a significant occupational health concern, with various industries posing unique risks to workers.

**Why the Correct Answer is Right**
Scrotal cancer, also known as penile cancer when it affects the penis, is a rare but well-documented occupational cancer linked to exposure to certain chemicals, particularly those used in the dye industry. Workers in this industry are at increased risk due to the prolonged inhalation of carcinogenic fumes. This type of cancer is often associated with the use of aniline dyes, which can cause genetic mutations leading to uncontrolled cell growth.

**Why Each Wrong Option is Incorrect**
**Option A:** This is incorrect because occupational cancers typically require prolonged exposure to carcinogenic agents to develop. Stopping exposure does not immediately eliminate the risk, but it does reduce the likelihood of cancer development over time.
**Option B:** This is incorrect as the site of occurrence can vary depending on the specific occupation and carcinogenic agent involved. While some occupational cancers may occur at specific sites, others may affect multiple areas of the body.
**Option C:** This is incorrect because occupational cancers can occur at any age, although the risk is generally higher in older workers who have been exposed to carcinogenic agents for longer periods.
**Option D:** This is incorrect as scrotal cancer is not typically associated with the dye industry. While workers in this industry are at risk for various cancers, scrotal cancer is not a common occupational cancer in this group.

**Clinical Pearl / High-Yield Fact**
Occupational cancers can be prevented or minimized by implementing strict safety protocols, providing personal protective equipment, and ensuring proper ventilation in workplaces where carcinogenic substances are used.

**Correct Answer: D. Scrotal cancer is not common in dye industry workers.**