[单选题]
Three identical charges of 3.0 mC y8:vew6 4o8 y,zn)9m jmruk liare placed at the vertices of an equilaterau *+dvk 7 27yq3jvwmgiegm:l7l triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the 7v 3j77g leuq:*dgwiv2+kmy mcharges?
A. $1.6 \; N$
B. $1.8 \; N$
C. $2.0 \; N$
D. $2.2 \; N$