The nurse explains ÔÇ£watchful waitingÔÇØ (ongoing visits to a physician for observation of signs and symptoms without treatment) to the client with prostate cancer. Which client is a candidate for ÔÇ£watchful waitingÔÇØ?

A. The client with prostate cancer that has metastasized to the bone generally requires aggressive therapy. B. The client is a candidate for ÔÇ£watchful waitingÔÇØ when older than age 70 with a life expectancy of less than 10 years and with low-grade disease. C. The client with extension of the tumor outside of the prostate generally requires aggressive therapy. D. The client who is asymptomatic with an elevated prostate-specific antigen generally requires aggressive therapy.