Yusuf tried to solve an equation step by step. \qquad\begin{aligned} \dfrac14r+2&=10 \\ \dfrac14r&=12&\green{\text{ Step } 1} \\ r&=48&\blue{\text{Step } 2} \end{aligned}
4
1
​
r+2
4
1
​
r
r
​

=10
=12
=48
​

Step 1
Step 2
​

Find Yusuf's mistake.
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Choose 1

(Choice A)
A
\green{\text{Step }1}Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b

(Choice B)
B
\blue{\text{Step }2}Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed

(Choice C)
C
Yusuf did not make a mistake.