[单选题]

The mometn the author got down to the river bank he saw .
A．the calf was about to fall into the river
B．Ma Shwe was placing the calf on the rock
C．the calf was washed away by the rising water

The mometn the author got down to the river bank he saw .A．the calf was about to fall into the riverB．Ma Shwe was placing the calf on the rockC．the calf was washed away by the rising water