大全823——居然没人问A？？？

823.        The Rorschzch test is gaining new respect as a diagnostic tool because it takes only one hour to expose behavior and thought processes that may be  unlikely to emerge in other procedures or weeks of ordinary interviewing.（C）

(A) that may be unlikely to emerge in other procedures or weeks of ordinary interviewing

(C) that might not emerge in other procedures or in weeks of ordinary

A选项哪里错？主要错在may和unlikely重复？抑或weeks前的in不能省？