请选择ABCD2C4f+q5A8w(`.v4z1l3m-d5k“ 6o+]6t4y*Zyour brother’s number?” “4”..]-F4P/{3},L's([
A．What’s.]-F4P/{3},L's([
B．How many.]-F4P/{3},L's([
C．How.]-F4P/{3},L's([
D．How old.]-F4P/{3},L's([