请选择DCBA-f6@0h2c5I.t0s0})x)P,t+V4{3}-IUnless it___________ , we’ll visit Shanghai Wild Animal Park this weekend./K.n-i9O;t
A. rains/K.n-i9O;t
B. will rain/K.n-i9O;t
C. hasn’t rained/K.n-i9O;t
D. is raining/K.n-i9O;t