Answer:
Increase.
Explanation:
We know,
Coupon rate > yield to maturity = Premium or > Market price
Here,
Coupon rate = 5%
Interest rate or YTM = 4%
From the formula,
We can say that as the coupon rate is greater than YTM, the market price of a $1000 issued bond will be increased. We can say that the bond is selling at a premium price because the interest rate is decreasing.