HELP!! Please!!

Choose the missing step in the given solution to the inequality −x − 3 < 13 + 3x.
−x − 3 < 13 + 3x
_______________
−4x < 16
x > −4

Select One:
a. −4x − 3 > 13
b. 2x − 3 < 18
c. −4x − 3 < 13
d. 2x − 3 > 18