[单选题]
A 5.0-C charge is 10 m from azvxinm.z4q 4f,x.c. b small test charge. What is the magnitun8 chz8 kl s1fcbls0+9de of the force 1l ncl 8sbz0ch8fks 9+experienced by a 1.0 nC charge placed at the location of the test charge?
A. $0.045 \; N$
B. $0.45 \; N$
C. $4.5 \; N$
D. $45 \; N$