Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Solve the problem. Round your answer, as needed.
-The total resistance in this electric circuit is given by the formula below. Find the total resistance for $\mathrm{a}=3, \mathrm{~b}=7, \mathrm{c}=6 \mathrm{ohms}$ .
Total resistance $=\mathrm{a}+\frac{1}{\frac{1}{\mathrm{~b}}+\frac{1}{\mathrm{c}}}$ .

A) $3.31 \mathrm{ohms}$
B) $9.77 \mathrm{ohms}$
C) $6.23 \mathrm{ohms}$
D) $6.00 \mathrm{ohms}$