A particle moves in the $x-y$ plane according to equation $\overrightarrow r = (\widehat i + 2\widehat j)\, A \, \cos \omega t$. The motion of the particle is
A
On a straight line
B
Simple harmonic
C
Periodic
D
All of these
Diffcult
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D
All of these
d $\overrightarrow{\mathrm{r}}=\mathrm{x} \hat{\mathrm{i}}+\mathrm{y} \hat{\mathrm{j}}$
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Correct answer is
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