Which statement about the response of a linear system is correct ( ).
选项：

A:If the initial state is zero, the zero-input response is zero.;
B:If the initial state is zero, the zero-state response is zero.;
C:If the zero-state response of the system is zero, then the forced-response is also zero.;
D:If the initial state of the system is zero, then the free-response of the system is zero.