PLEASE HELP!! A student is trying to solve the system of two equations given below:Equation P: y + z = 4Equation Q: 3y + 7z = 15Which of the following steps can be used to eliminate the y term? (4 points)Select one:a. −3(y + z = 4)b. 3(y + z = 4)c. −1(3y + 7z = 15)d. −3(3y + 7z = 15)