Give the order of the differential equation below, where y represents a function of the variable x xy"-2y'+y=2 Choose the correct answer below. OA. The given equation is a second-order differential equation because it involves a second derivative but no higher derivat OB. The given equation is a third-order differential equation because it involves a third derivative but no higher derivative. OC. The given equation is a first-order differential equation because it involves a first derivative but no higher derivative OD. The given equation is a first-order differential equation because it only involves a first derivative.