Which description of a Y-linked trait in humans is CORRECT?

A) All the sons of an affected father will be affected with the trait.
B) Half the sons of a mother whose father was affected with the trait will be affected.
C) Half the sons of an affected father will not be affected with the trait and the other half will be infertile.
D) All the daughters of an affected father will be phenotypically normal but half of their own sons will be affected with the trait.
E) The parents of an affected man likely were both phenotypically normal.