Solve the System by Elimination $\{ ( 0,1 ) \}$ B) $\varnothing$

Multiple Choice

Solve the system by elimination.
7x - 6y = 7
7x + 6y = 7

A) $\{ ( 0,1 ) \}$
B) $\varnothing$
C) $\{ ( 1,1 ) \}$
D) $\{ ( 1,0 ) \}$