[单选题]
95.07: An isolated conducting 6j klk .,. qyl7i1 :xjyeaz+dgsphere of radius R has positive pvm25xzj8 gvl,wd4k /charge + Q. Which graph best depic 4ljmvx5zgw,2/kp8vd ts the electric potential as a function of r, the distance from the center of the sphere?