How so I solve this?

18) MATH 1026 3.2.2c [ 161776297 ] A student calculated a solution for the differential equation, b g (x) = x sin(ax2) + (domain x > (). The student's solution is shown below: x +1 8 (x ) = - cos (ax?) + b In(x + 1) +c X There may have been some mistakes in the calculation. Indicate to the student which terms of the differential equation were integrated correctly. The terms are separated by a + or - sign. O a) First term is integrated correctly, second term is integrated incorrectly O b) First and second terms are integrated incorrectly O c) First and second terms are integrated correctly O d) First term is integrated incorrectly, second term is integrated correctly