Use the Rules of Exponents to Simplify the Expression $\frac{x^{1 / 2} \cdot x^{3 / 10} \cdot x^{2 / 5}}{\left(x^{2}\right)^{-1 / 2}}$

Multiple Choice

Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.
- $\frac{x^{1 / 2} \cdot x^{3 / 10} \cdot x^{2 / 5}}{\left(x^{2}\right) ^{-1 / 2}}$

A) $\frac{1}{x^{22 / 7}}$

B) $\frac{1}{\mathrm{x}^{11 / 5}}$

C) $x^{22 / 7}$

D) $x^{11 / 5}$