William had $50 for breakfast money. Then he spent $2 for breakfast each day for 5 days. Which equation can be used to determine the number of dollars, d, William has left at the end of the 5 days? A. 50 / 2(5) = d B. 50 + 2(5)= d C. 50 (times)2(5)=d D. 50 - 2(5) = d