In what way is the rule for the interaction between magnetic poles similar to the rule for the interaction between electric charges?
A. The scalar forces both fall off as the inverse square of the distance between the objects, and they are proportional to the product of the strength of each source.
B. The vector forces both fall off as the inverse square of the distance between the objects, and they are proportional to the product of the strength of each source.
C. The vector forces both are proportional to the distance between each object, and they are proportional to the product of the strength of each source.
D. The vector forces both fall off inversely proportional to the distance between the objects, and they are proportional to the product of the strength of each source.