Which situation results in a final value of zero ?

a. The temperature after a decrease of 5 degrees from a temperature of -5 degrees .

b. The height of an airplane after taking off from ground level and rising 1,000 feet.

c.The amount of money received in change after making a $10 purchase with a $20 bill.

d. The distance above sea level after increasing 24 meters from a depth of 24 meters below sea level.