Travis, Who Is 24, Is Getting Dressed After a Shower

Travis, who is 24, is getting dressed after a shower when he notices a small, painless mass on his scrotum. Travis:

A) should not be concerned, because testicular cancer rarely affects men younger than 50.
B) should contact his doctor to have his symptoms evaluated.
C) should monitor his symptoms but wait a few years, because testicular cancer grows very slowly and only rarely spreads beyond the genitals.
D) should not be concerned, because if the mass were cancer, it would be bloody and painful.