[单选题]
An electron and a pro-l cxl-) kbsy1ton are s2rio6q2 ;y60ahg bssm eparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next;g y6i26srmb 0 sqaoh2 to the first electron?
A. It quadruples.
B. It doubles.
C. It will not change.
D. It goes to zero.
