Which Statement by a Patient Indicates He Understands the Teaching

Which statement by a patient indicates he understands the teaching relative to how to perform a testicular self-examination?

A) "It's not necessary to feel the testes; just look at them in a mirror."
B) "The best time to do a self-examination is after a shower, when my body is warm."
C) "It doesn't really matter when I do it; just do it sometime."
D) "The physician is really the best person to check this for me."