Which of the following cannot be an enum’s underlying type?

It is possible to convert an inner join into an outer join

Indicate whether the statement is true or false

Suppose that alpha, beta, and gamma are int variables and the input is:100 110 120200 210 220300 310 320What is the value of gamma after the following statements execute?cin >> alpha;cin.ignore(100, '\n');cin >> beta;cin.ignore(100,'\n');cin >> gamma; 

A. 100 B. 200 C. 300 D. 320