请选择ABCD+r:L5Z.Y3x3u-L0p3X7N.U2C;x7X'v2}*W Please remember to give the horse some tree___.9P7a-U4b3U.b
A. leafs9P7a-U4b3U.b
B. leaves9P7a-U4b3U.b
C. leaf9P7a-U4b3U.b
D. leave9P7a-U4b3U.b