At a college football game, \(\dfrac45\) of the seats in the lower deck of the stadium were sold. If \(\dfrac14\) of all the seating in the stadium is located in the lower deck, and if \(\dfrac23\) of all the seats in the stadium were sold, what fraction of the unsold seats in the stadium were in the lower deck?
(A) \(\dfrac3{20}\)
(B) \(\dfrac16\)
(C) \(\dfrac15\)
(D) \(\dfrac13\)
(E) \(\dfrac7{15}\)
Answer: A
Source: Princeton Review