Simplify the Expression by Using the Properties of Rational Exponents $$h ^ { 7 / 3 } \cdot h ^ { 5 / 3 }$$

Multiple Choice

Simplify the expression by using the properties of rational exponents. Write the final answer using positive exponents only. $$h ^ { 7 / 3 } \cdot h ^ { 5 / 3 }$$

A) $h ^ { 35 / 3 }$
B) $h ^ { 35 / 9 }$
C) $h ^ { 4 }$
D) $h ^ { 2 }$