A particle at a distance of \( 1 \mathrm{~m} \) from the origin starts moving such that \( d r /...

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A particle at a distance of \( 1 \mathrm{~m} \) from the origin starts moving such that \( d r / d \theta=r \), where \( (r, \theta) \) are polar coordinates. Then the angle between resultant velocity and tangential velocity component is
[KVPY 2016]
(a) 30 degrees
(b) 45 degrees
(c) 60 degrees
(d) Dependent on where the particle is
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