A positive test charge placed at a certain location experiences a force of 0.015N directed west. Which of the following best states the direction of the electric field at that point and the direction of the force that would act on a negative test charge of equal magnitude placed at the same point?
a) The field is east, and the negative charge would experience a force toward the west.
b) The field is west, and the negative charge would experience a force toward the west.
c) The field is west, and the negative charge would experience a force toward the east.
d) The field is east, and the negative charge would experience a force toward the east.