$A$ charge $q$ moves in a region where both an electric field and a magnetic field exist. The total force on it is:
- A$q \overrightarrow{E} + q (\overrightarrow{v} \times \overrightarrow{B})$
- B$q (\overrightarrow{v} \times \overrightarrow{B})$
- C$q \overrightarrow{E} + q (\overrightarrow{B} \times \overrightarrow{v})$
- D$q \overrightarrow{B} + q (\overrightarrow{E} \times \overrightarrow{v})$
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