AHSME 1995 Problem 1

Kim earned scores of 87,83, and 88 on her first three mathematics examinations. If Kim receives a score of 90 on the fourth exam, then her average will

$\mathrm{(A) \ \text{remain the same} } \mathrm{(B) \ \text{increase by 1} } \mathrm{(C) \ \text{increase by 2} } \mathrm{(D) \ \text{increase by 3} } \mathrm{(E) \ \text{increase by 4} }$