Rationalize the Denominator and Simplify the Expression $\frac { 2 } { \sqrt { z } }$

Multiple Choice

Rationalize the denominator and simplify the expression $\frac { 2 } { \sqrt { z } }$ .

A) $\frac { 2 \sqrt { z } } { z ^ { 2 } }$
B) $\frac { 2 \sqrt { z } } { z }$
C) 2
D) $2 \sqrt { z }$
E) $\frac { 2 + \sqrt { z } } { z }$