A, B, C and D are four different physical quantities having different dimensions. None of them is dimensionless. But we know that the equation `AD= C 1n(BD)` holds true. Then which of the combination is not a meaningful quantity :-

Options

A. `(C)/(BD)-(A^(2)D^(2))/(C)`
B. `A^(2)-B^(2)C^(2)`
C. `(A)/(B)-C`
D. `(A^(2)-AC)/(D)`.

Answer

D