Solve the Problem $\frac { 1 } { 2 }$ Ounce Per Second; the Average Rate of Change in the to a Large

Solve the problem.
-A faucet is used to add water to a large bottle that already contained some water. After it has been filling for 5 seconds, the gauge on the bottle indicates that it contains 14 ounces of water. After it has been filling for 11 seconds, the gauge indicates the bottle contains 26 ounces of water. Find and interpret the average rate of change in the volume of water per second.

A) 4 ounces per second; the average rate of change in the volume of water is 4 ounces per second.

B) 15 ounces per second; the average rate of change in the volume of water is 15 ounces per second.

C) $\frac { 1 } { 2 }$ ounce per second; the average rate of change in the volume of water is $\frac { 1 } { 2 }$ ounce per second.
D) 2 ounces per second; the average rate of change in the volume of water is 2 ounces per second.