Which pair of diodes is equivalent to an n-p-n transistor

The same question, asked 2 times: 3 May 2023 S1, 13 May 2026 S1. Every wording below, oldest first.

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Question 1
3 May 2023 S1
15 $An n-p-n transistor can be considered to be equivalent to two diodes connected. The correct figure out of the following is$
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Question 2
13 May 2026 S1
149 $An n-p-n transistor can be considered to be equivalent to two diodes connected. Which one of the following figure is correct?$
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