[单选题]
A conducting rod of l h za6nb(t2v)suc1 ap(,yykx 9e7 dr yhba0*oanh8+(:.j(ggu 4ehwggq ngth $L$ is moved in a region of uniform magnetic field $B$ to light the filament bulb with a resistance of $R$. The direction of the magnetic field is out of plane.
What is the maximum output power of the bulb?
A. $\frac{BvL}{R}$
B. $\frac{B^2v^2L^2}{R}$
C. $\frac{B^2v^2L^2}{R^2}$
D. 0
