Subtraction Can Be Done in Vertical Format $\begin{array} { r } - \quad 18 \\- \quad 18 \\\hline\end{array}$

Subtraction can be done in vertical format. Find the difference. $\begin{array} { r } - \quad 18 \\- \quad 18 \\\hline\end{array}$

A) $-$ 37
B) 36
C) $-$ 36
D) $-$ 39
E) 0