Write with Rational Exponents and Then Apply the Properties of Exponents

Multiple Choice

Write with rational exponents and then apply the properties of exponents. Assume that all radicands represent positive real numbers. Give answers in exponential form.
- $\sqrt[4]{x^{7}} \cdot \sqrt[3]{x^{2}}$

A) $x^{12 / 14}$

B) $x^{14 / 12}$

C) $x^{29 / 12}$

D) $x^{9 / 7}$