What incident abroad marked the election day of the 1956 election, thereby enhancing Eisenhower's bid for a second term?

Are these your choices?

A. The crisis in the Formosa Straits
B. The French defeat in Indochina
C. An attack on U.S. Marines in Beirut
D. The resolution of the Suez crisis

Why didn't you post the entire question AND what YOU THINK the answer is?