Answer:
B: they will have the same solution because the first equation of system B is obtained by adding the first equation of system A to 3 times the second equation of system A.
Explanation:
Each of the first two answer choices suggests that the first equation of system A was added to something to get the first equation of system B. We can subtract the first equation of system A from that of system B to see what was added exactly:
(-10x +19y) -(2x +y) = (-1) -(5)
-12x +18y = -6
The coefficients of this equation are 3 times those of the second equation of either system, so choice B is an appropriate description.