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A particle moves in the xy-plane under the action of a force F such that the components of its linear momentum p at any time t are ${p}_{x}=2\mathrm{cos}t$, ${p}_{y}=2\mathrm{sin}t$. The angle between F and p at time t is

(1) 90°

(2) 0°

(3) 180°

(4) 30°