(Economics) Which of the following best explains why the money supply is increased when
the Fed buys Treasury bonds?
A. When the Fed buys Treasury bonds, it increases the amount of
deposits in people's bank accounts.
O B. When the Fed buys Treasury bonds, the available supply of bonds
decreases, which drives up bond prices.
C. When the Fed buys Treasury bonds, the demand for bond
purchases and for money in general is increased.
D. When the Fed buys Treasury bonds, there are more bonds on
reserve to enable overnight loans.

Suppose that a paving company produces paved parking spaces (q) using a fixed quantity of land (t) and variable quantities of cement (c) and labor (l). the firm is currently paving 1,000 parking spaces. the firm's cost of cement is $3 comma 600.003,600.00 per acre covered (c) and its cost of labor is $35.0035.00/hour (w). for the quantities of c and l that the firm has chosen, mp subscript upper c baseline equals 60mpc=60 and mp subscript upper l baseline equals 7mpl=7. is this firm minimizing its cost of producing parking spaces?