Need Help in the following multiple choice select the correct

A political scientist wants to prove that a candidate is currently carrying more than 60% of the vote in the state. Her assistants randomly sample 200 eligible voters in the state by telephone and only 90 declare that they support her candidate. At a=0.01, the critical z-value for this problem is Select one: O a. 2.326 O b. 1.645 O c. 1.281 O d. -2.326