GAUSS8 2013 Problem 18

Past Contests GAUSS8 GAUSS (GR. 8) - 2013
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Sally is asked to multiply \frac23 and 1\frac12 . Jane is asked to add them. The difference between Sally’s answer and Jane’s answer is

Answer Choices
A. \frac{4}{15}
B. 1\frac16
C. 0
D. 1\frac35
E. \frac56