Tomas works as an underwater photographer. He starts at a position that is 19 feet below sea level. He rises 8 feet, then descends 14 feet to take a photo of a coral reef. Enter an expression to find his position relative to sea level when he took the photo and then evaluate the expression.

A. An expression for Tomas's position is

B. Evaluate the expression:

C. Tomas took the photo at feet below sea level