[单选题]
A 5.0-C charge is 10 m from a small test charge. Wht+t8hu02oy wtat is the magg+tp)bh8vn; n nitude of the force experienced by a 1.0 nC charge placed at t )t+ gbnn;p8vhhe location of the test charge?
A. $0.045 \; N$
B. $0.45 \; N$
C. $4.5 \; N$
D. $45 \; N$