The banker's gain on a bill due due 1 year hence at 12% per annum is Rs.8.4. The true discount is Choose the correct choice from the following choices:
A) rs . 70	B) rs . 36	C) rs . 54	D) rs . 50	E) none

Rationale: "solution t . d = [ b . g x 100 / r x t ] = rs . ( 8.4 x 100 / 12 x 1 ) = rs . 70 . answer a"
Answer: A