HELP PLSSS ITS URGENT

A: Infinitely many solutions

Step-by-step explanation:

Use the formula a1/ a2 = b1/ b2 = c1/c2. If all of them equal to each other, then they are an infinitely many solutions.

Here I will apply that:

a1 = 1 or x

a2 = 2

b1 = -2

b2 = -4

c1 = 5

c2 = 10

1/2 = -2/-4 = 5/10

1/2 = 1/2 = 1/2.

All of them give and equal the same answer which is 1/2. Therefore, they are infinitely many solutions.