Distinct lines \ell and m lie in the x y-plane. They intersect at the origin. Point P(-1,4) is reflected about line \ell to point P^{\prime}, and then P^{\prime} is reflected about line m to point P^{\prime \prime}. The equation of line \ell is 5 x-y=0, and the coordinates of P^{\prime \prime} are (4,1). What is the equation of line m ?

**Answer Choices**

A. 5 x+2 y=0

B. 3 x+2 y=0

C. x-3 y=0

D. 2 x-3 y=0

E. 5 x-3 y=0