An investor buys a 10 year, 7% annual coupon payment bond at $90 and holds the bond to end of year 4. Right after the bond purchase, interest rate goes up by 100 bps, then the investors realized horizon yield is:

A: 9.08 B: 9.10 C: 9.12

in previous question, the capital gain/loss is (use negative number for loss):

A:-3.44 B: -3.56 C:-3.7