It was his laziness and his rudeness that ______ his success.

A．destroyed

B．ruined

C．damaged

D．hurt

执行下列语句后，a和b的值分别为______。
int a，b；
a=1+b=2+7%-4-'A'；

A) -63, -64
B) -59, -60
C) 1, -60
D) 79, 78