Which statement best represents price discovery in S&P 500 futures and the cash market?

A. S&P 500 futures follow the cash market, where prices are determined

B. Trading in dark pools is now the dominant factor in determining prices for both the cash market and the S&P 500

C. SInce 1985, the S&P 500 futures market has played the dominant price discovery role, as opposed to the cash market.

D. Both the S&P 500 and the cash market are eqully important in price determination