A bond matures in 20 years, at which time it pays the owner $1000. It also pays $70 at the end of each off the next 20 years. if similar bonds are currently yielding 7%, what is the market value of the bond? A. under $1000 B. exactly $1000 C. over $1000 D. cannnot be determined from the information given

please explain the answer thx.