Two Tiny Metal Spheres Are Fixed to the Ends of a Non-Conducting

Two tiny metal spheres are fixed to the ends of a non-conducting string of length
) Equal charges,+q,are placed on the metal spheres.Randall says that the force on the string has magnitude
) Tilden says that the tension in the string has magnitude
) Which one,if either,is correct?

A) Randall,because both charges exert forces on the string,but the tension is .
B) Tilden,because both charges exert forces on the string,but the net force is .
C) Both are correct,because both charges exert forces on the string.
D) Neither is correct,because both the tension and the force have magnitude .
E) Neither is correct,because the tension is ,but the net force is 0.