Correct option (A) (B) (C)
Explanation:
(A) if μ < tanθ/3, it will not be in pure rolling.
(B) If mg cosθ > mg sinθ, cylinder will accelerate up initially for some time.
(C) If mg sinθ > mg cosθ , cylinder will accelerate down continuously.
(D) Friction will always act in upward direction.