For the initial conditions x1(0) = x2(0) = 1, the response x1t2 for the zero-input response is:

a. x(t)=(1+1), x2(t) = 1 for 10 b. x(t) = (5+1),x2(t) = 1 for t0 = c. x(t) (511), x2(t) = 1 for t 0 d. x(t) = x(t) = 1 for t 0