Consider a flexible plastic bottle containing both air and water immersed neck down in an open dish of water. The water level in the bottle will
a) fall if pinched at A but rise if pinched at B
b) fall if pinched at A or at B
c) fall if pinched at A but stay where it is if pinched at B
d) rise if pinched at A but stay where it is if pinched at B
e) stay where' it is if pinched at A or at B
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