Which of the following statements about prostate cancer is correct?

• A. Tobacco smoking is the leading cause of prostate cancer in the United States.
• B. The risk of prostate cancer increases with age.
• C. Having a father-in-law with prostate cancer increases an individual’s risk of prostate cancer. 
• D. Prostate cancer is easily diagnosed with a pelvic X-ray. 

Answer: (B)

Verified step by step guidance

1. Understand the context of the problem: The question is about identifying the correct statement regarding prostate cancer. This requires knowledge of risk factors, diagnostic methods, and general information about the disease.
2. Step 1: Evaluate the first statement: 'Tobacco smoking is the leading cause of prostate cancer in the United States.' Research and understand that while smoking is a risk factor for many cancers, it is not the leading cause of prostate cancer. Prostate cancer is more strongly associated with age, genetics, and family history.
3. Step 2: Evaluate the second statement: 'The risk of prostate cancer increases with age.' This is a well-documented fact. Prostate cancer is more common in older men, particularly those over the age of 50.
4. Step 3: Evaluate the third statement: 'Having a father-in-law with prostate cancer increases an individual’s risk of prostate cancer.' This is incorrect because familial risk is associated with direct blood relatives (e.g., father, brother), not in-laws.
5. Step 4: Evaluate the fourth statement: 'Prostate cancer is easily diagnosed with a pelvic X-ray.' This is incorrect because prostate cancer is typically diagnosed through methods such as a prostate-specific antigen (PSA) blood test, digital rectal exam (DRE), or biopsy, not a pelvic X-ray.