If "A" denotes "subtracted from", "B" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by", then which of the following statement is correct?
Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year. Thus, both A and R are true & R correctly explains A.
Who among the following economists gave the concept of "economies of scale". Which says "many goods and services can be produced more cheaply in long series"?