Kevin's history grade will be determined by the average of 4 tests. he received a 76, an 85, and a 74 on the first 3 tests. he needs to get a average of at least 80 to receive a B. which inequality can be used to find g, the minimum grade Kevin must make on the fourth test to receive a B in history?
A. 76+85+74+g/4_>80
B. 76+85+74-g/3_>80
C.76+85+74-g/4_>80
D. 76+85+75+g/3_>80