The value of \(\frac {\frac 4 5 \rm of \frac 7 8 \left(\frac 1 4 \div \frac 5 4 + \frac 3 2\right)}{1 \frac 3 4 + \frac 1 2}\) of \(\left(2 \frac {16}{17} \div \frac 7 9\right)\) is:

• A. 2
• B. 1 / 2
• C. 3
• D. 2 / 3