Add or Subtract $\frac{13}{18}-\frac{7}{18}$ A) $\frac{6}{18}$ B) $\frac{2}{3}$ C) $\frac{1}{3}$ D) $\frac{6}{0}$

Multiple Choice

Add or subtract. Write the answer in lowest terms.
- $\frac{13}{18}-\frac{7}{18}$

A) $\frac{6}{18}$
B) $\frac{2}{3}$
C) $\frac{1}{3}$
D) $\frac{6}{0}$