Solve the System of Equation Using the Addition Method $x = - 1 , y = 3$

Multiple Choice

Solve the system of equation using the addition method:
x - 2y = -7
Y = 2x - 1

A) $x = - 1 , y = 3$
B) $x = 3 . u = 5$
C) $x = \frac { 5 } { 3 } , u = 4 \frac { 1 } { 3 }$
D) $x = 2 , y = 4 \frac { 1 } { 3 }$