An electron is moving through a magnetic field whose magnitude is 9.25 x 10⁻⁴ T. The electron experiences only a magnetic force and has an acceleration of magnitude 2.42 x 10¹⁴ (m)/(s²). What is the charge of the electron?
a) -1.6 x 10⁻¹⁹ C
b) 1.6 x 10⁻¹⁹ C
c) -3.2 x 10⁻¹⁹ C
d) 3.2 x 10⁻¹⁹ C
e) -2.4 x 10⁻¹⁹ C