A man is sitting in a boat which is floating in a pond.If the man drinks some water from the pond ,the level of water in the pond

Options

A. When the man throws the stomes in water from the boat, the level of boat goes down.
B. When the man throws the stomes in water from the boat, the level of boat rise up
C. When the man drinks some water from the pond, the level of boat goes down.
D. When the man drinks some water from the pond, the level of boat remains unchanged.

Answer

(B, D)

Explanation

For (A/B) : Force of buouanvy increases. Therefore level of boat rise up.
for (C/D) : When man drinks some water, the level of boat remains unchanged.