Foyle, Inc. had unexercised stock options to purchase 50,000 shares of common stock at $45 at the end of 2018. If the average market price for Foyle's common stock was $49.50 during 2018, what should be the effect on the number of shares used in computing dliuted earnings per share (use the Treasury method)? A. +5,454 B. +50,000 C. +4,545 D. -6,000