A Solid Insulating Sphere of Radius R Contains a Positive

Multiple Choice

A solid insulating sphere of radius R contains a positive charge that is distributed with a volume charge density that does not depend on angle but does increase linearly with distance from the sphere center. Which of the graphs below correctly gives the magnitude E of the electric field as a function of the distance r from the center of the sphere?

A) A
B) B
C) C
D) D
E) E