请选择ABC.X6S9N1k*I:n7W2l)z1r1h8i4` The ducks are swimming _______ the water.9e1Q-r(n8b8H-?/Y*k
A.in9e1Q-r(n8b8H-?/Y*k
B. on9e1Q-r(n8b8H-?/Y*k
C.under9e1Q-r(n8b8H-?/Y*k