
- Aq1 and q2, both are positive.
- Bq1 and q2, both are negative.
- Cq1 is positive and q2 is negative.
- Dq2 is positive and q1 is negative.

Explanation:
The filed of lines is outward from the positive charge and inward to the negative charge.
Here the field of lines is towards the charges q1 and q2. Thus, both charges are negative.
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