Find the Coordinates of the Other Endpoint of the Segment $\left( \frac { p + d } { 2 } , \frac { q - y } { 2 } \right)$

Multiple Choice

Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint.
-midpoint $\left( \frac { p + d } { 2 } , \frac { q - y } { 2 } \right)$ , endpoint $( p , q )$

A) $\left( \frac { \mathrm { d } } { 2 } , - \frac { \mathrm { y } } { 2 } \right)$
B) $\left( \frac { 3 p + d } { 4 } , \frac { 3 q - y } { 4 } \right)$
C) $( \mathrm { d } , \mathrm { y } )$
D) $( \mathrm { d } , - \mathrm { y } )$