An Election Was Conducted at General Affairs Company to Elect

An election was conducted at General Affairs Company to elect a union bargaining representative.The election was conducted in a fair manner,but the opposite union called for a re-election.Under Section 9(C) (3) of National Labor Relations Act,no new election can be held for a _____ period for that unit.

A) twenty-four month
B) twelve-month
C) thirty-six month
D) six-month