Which of the following sentences describes a situation in which opposite quantities combine to make 0? Check all that apply.


(A) A person is walking forward at a rate of 5 ft per second on a moving walkway that is moving forward at a rate of 3 ft per second.


(B) A 150-lb man doing pull-ups exerts a 160lb upward force on the bar to raise himself.


(C) The top of an office building in Kuwait City, Kuwait, is 413 meters above sea level. The Dead Sea between Israel and Jordan is 413 meters below sea level.


(D) An heiress inherits $500,000 and pays $500,000 in income tax this year.