Help!! Would the answer be c??


The steps below show the incomplete solution to find the value of x for the equation 7x − 3x − 4 = −1 + 21:

Step 1: 7x − 3x − 4 = −1 + 21
Step 2: 7x − 3x − 4 = 20
Step 3: 4x − 4 = 20

Which of these is most likely the next step? (4 points)

Select one:
a. 4x = 24

b. 4x = 16

c. 4x = 5

d. 4x = 80