Consider the following statements: Sinking of an intermediate support of a continuous beam____. | Civil Engineering MCQ's

1.    reduces the negative moment at support.
2.    increases the negative moment at support.
3.    reduces the positive moment at support.
4.    increases the positive moment at the center of span.
Of these statements
A.    i and 4 are correct
B.    1 and 3 are correct
C.    2 and 3 are correct
D.    2 and 4 are correct   

Ans: A