In the following figure, the diodes which are forward biased,

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In the following figure, the diodes which are forward biased, are

1. (C) only
2. (C) and (A)
3. (B) and (D)
4. (A), (B) and (D)

Correct Option: B

Only in (A) and (C) diodes are forward biased as p-type should be at higher potential and n-type at lower potential.