[单选题]
Two point charges, separat +rv0kojpfp g7vwja1 k/n x(4.ed by 1.5 cm, have pzcl5+,m /4(gid5ua rpk*hd m charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of th cz/,iapd*4 mdpklg5hr5+ (ume electric force between them?
A. $400 \; N$
B. $360 \; N$
C. $320 \; N$
D. $160 \; N$