Find the Coefficient Of $x$ In the Binomial Series For $\sqrt { 1 + x }$

Multiple Choice

Find the coefficient of $x$ in the binomial series for $\sqrt { 1 + x }$ .

A) 2
B) -1
C) 1
D) $- \frac { 1 } { 2 }$
E) $\frac { 1 } { 2 }$
F) $- \sqrt { 2 }$
G) -2

H) $\sqrt { 2 }$