Marcy Owns 100 Shares of Dee's Inc

Marcy owns 100 shares of Dee's Inc. while Teri owns 300 shares and Lucie owns 500 shares. There are 900 shares outstanding. There are currently three seats open on the board of directors. With
Straight voting, how many additional shares will Marcy have to buy from Terri or Lucie to guarantee
That she will be elected to the board?

A) 0
B) 1
C) 151
D) 201
E) 351