Multiply the Expression as You Would Multiply Polynomials $$\left( a ^ { 11 / 2 } + b ^ { 3 / 2 } \right) \left( a ^ { 11 / 2 } - b ^ { 3 / 2 } \right)$$

Multiply the expression as you would multiply polynomials. $$\left( a ^ { 11 / 2 } + b ^ { 3 / 2 } \right) \left( a ^ { 11 / 2 } - b ^ { 3 / 2 } \right)$$

A) $\quad a ^ { 11 } - b ^ { 3 }$
B) $\quad ( a + b ) ^ { 4 }$
C) $\quad ( a - b ) ^ { 7 }$
D) $\quad a ^ { 22 } - b ^ { 6 }$