[单选题]
Two charged objects atvypsev- g1 )a8tra4jzdqr 9 u,ea;;4vtak ct each other with a certain force. If the charges on both objects are doubled with zv4dkueqj,a; t94a; rno change in separation, the force between them
A. quadruples.
B. doubles.
C. halves.
D. increases, but we can't say how much without knowing the distance between them.
