Which of the following $1,000 face-value securities has the highest yield to maturity (=market rate of return)? A) Bond A with a current price of $950 B) Bond B with a current price of $1,050 C) Bond C with a current price of $1,000 and an annual coupon of $80 D) Bond D with a current price of $1,000 and an annual coupon of $60