The work of a student to solve a set of equations is shown below: equation 1: m = 8 + 2n equation 2: 4m = 4 + 4n step 1: −4(m) = −4(8 + 2n) 4m = 4 + 4n step 2: −4m = −32 − 8n 4m = 4 + 4n step 3: −4m + 4m = −32 − 8n + 4n step 4: 0 = −32 − 4n step 5: n = − 8 in which step did the student first make an error? (4 points) a. step 1 b. step 2 c. step 3 d. step 4