A student solved the equation below using the steps shown, rounding to two decimal places if necessary.
Given: 51 + ( -4 - 111 ) = 14

Step 1: 51 - 4 + 111 = 14
Step 2: 160 - 4 = 14
Step 3: 161 18
Step 4: I = 1.13

Which step contains the first mistake?
A. Step 3
В. Step 4
C. Step 1
D. Step 2​