in which fo the following cases the centre of mass of a rod is certainly not at its centre?
(A) The density continuously increases from left ot right
(B) The density continuously decreases from left to right
(C) The density decreases from left to right up to the centre and then increases
(D) The density increases from left to right up to the centre and then decreases
Select correct alternative.

Options

A. Only (A)
B. Only (A) and (B)
C. Only (B)
D. Only (C) and (D)

Answer

B