Good news about an economic indicator __________ the denominator and __________ the numerator in the stock price valuation formula

Marking to market involves

A) changing the futures price to the spot price each day. B) engaging in arbitrage so as to reduce the risk involved with futures contracts. C) crediting or debiting the margin account based on the net change in the value of the futures contract. D) updating the futures price after the market closes each day.

Refer to the above figure. Profits for this firm are positive

A) only for all points less than B. B) only at points B and C. C) for points between B and C. D) for all points less than B and greater than C.