A boat crossing a river moves with a velocity $v$ relative to still water. The river is flowing with a velocity $v / 2$ with respect to the bank. The angle with respect to the flow direction with which the boat should move to minimize the drift is
A boat crossing a river moves with a velocity $v$ relative to still water. The river is flowing with a velocity $v / 2$ with respect to the bank. The angle with respect to the flow direction with which the boat should move to minimize the drift is
- [KVPY 2012]
- A
$30^{\circ}$
- B
$60^{\circ}$
- C
$150^{\circ}$
- D
$120^{\circ}$
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