To solve the system of linear equations 3x+5y=2 and 6x+10y=8 by using the linear combination method, Laura correctly multiplied the first equation by - 2 to get - 6x-10y=-4 and then correctly added the equations - 6x-10y=-4 and and then correctly added the equations - 6x-10y=-4 and 6x+10y=8 to get 0 = 4. How many solutions are there to the system of equations?
A. 0
B. 1
C. 2
D. 4
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