Which of the following statements is INCORRECT about covered call writing? O a. Covered call writing is known as a buy-write if one simultaneously buys the stock and sells the call, but it's an overwrite if one sells the call after purchasing the share. O b. The Chicago Board Options Exchange's S&P 500 BuyWrite Index (BXM) is a benchmark for measuring the performance of covered call writing strategies. O c. Covered call writing is considered a speculative strategy whose objective is to beat the market: O d. Covered call writing is considered a hedge strategy