The present value of an expected future payment ________ as the interest rate increases

Many middle-to-older-aged men now claim they "need" Viagra (the male impotency wonder drug) for an enjoyable sex life. The economic way of thinking predicts

A) more men would be likely to claim they need Viagra if the price per pill were much lower (say two cents each) compared to the current price. B) fewer men would be likely to claim they need Viagra if the price per pill were much higher (say, two hundred dollars each) compared to the current price. C) other things constant, more prescriptions would be written if the price of Viagra falls significantly. D) other things constant, fewer prescriptions would be written if the price of Viagra rises significantly. E) all of the above are true.

If the currency drain increases, how can the Fed adjust the monetary base to offset the effect on the quantity of money?

What will be an ideal response?