Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Let $P = ( x , y )$ be a point on the graph of $y = \sqrt { x }$ . Express the distance $\mathrm { d }$ from $P$ to the point $( 1,0 )$ as a function of $x$

A) $d ( x ) = x ^ { 2 } = x + 1$
B) $d ( x ) = x ^ { 2 } + 2 x + 2$
C) $d ( x ) = \sqrt { x ^ { 2 } + 2 x + 2 }$
D) $d ( x ) = \sqrt { x ^ { 2 } - x + 1 }$