Here is a system of linear equations : 5x - 2y = 20; 8x 4y = 12 Select all the steps that would help to eliminate a variable and enable solving. A Multiply the first equation by 2, then add the second equation to the result. B Multiply the first equation by 8 and the second equation by 5, then add the resulting equations. C Multiply the first equation by 2, then subtract the result from the second equation. D Multiply the second equation by 5, then subtract the result from the first equation. E Divide the second equation by 2, then add the result to the first equation.