Use Cramer's Rule to Solve the System of Equations $D = 0 ; \varnothing$

Multiple Choice

Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.
x+y=1
x+y=5

A) Cramer's rule does not apply since $D = 0 ; \varnothing$
B) $\{ ( 1,5 ) \}$
C) $\{ ( 0,6 ) \}$
D) Cramer's rule does not apply since $\mathrm { D } = 0 ; \{ ( 5 - \mathrm { y } , \mathrm { y } ) \}$