[单选题]
Two point charges, separated by 1.5 cm, have charge valuecp : lqi6 8mdo,svl;0gs of ygs ti/:1:qclyf aq *.2.0 and -4.0 mC, respectively. What is the magnitu1 isy*atcqqy :/:f.lgde of the electric force between them?
A. $400 \; N$
B. $360 \; N$
C. $320 \; N$
D. $160 \; N$