【单选题】

Directions:Each of the following analogy questions presents a related pair of words linked by a colon. Five lettered pairs of words follow the linked pair.Choose the lettered pair of words whose relationship is most like the relationship expressed in the original linked pair.

HELPFUL : OFFICIOUS ::A．dutiful: assiduous
B．effusive : gushing
C．gullible :incredulous
D．enigmatic : dumbfounded
E、deferential : sycophantic