Correct Option: B

In India, Black money refers to funds earned on the black market, on which income and other taxes has not been paid. Black money leads to black liquidity which is immune to any monetary-fiscal policy. It can move around in the economy creating excess demand in several vulnerable sectors of the economy. Of particular relevance in this context is a policy dominated by sector-wise credit rationing in order to maintain inter-sectoral balances. The cost of credit is one one part of such a policy. So, in nutshell, the existence of parallel economy erodes the effectiveness of monetary policies.