WILL GIVE 20 POINTS

The steps below are used to solve for the unknown angle, X, but are not arranged in the correct order.

1: x=15
2: 75+15= 90
3: 75+x=90
4: 75-75+x=90-75
Which sequence shows the correct order of the steps Virginia should follow to find the measure of the unknown angle.

A) 1,2,3,4
B) 3,4,1,2
C) 4,2,1,3
D) 2,3,1,4