Question: When VCE increase, reverse bias on the collector - base junction increases, and base width WB decreases, why the collector current IC increases for constant

When VCE increase, reverse bias on the collector-base junction increases, and base width WB
decreases, why the collector current IC increases for constant base current IB .
More electrons in emitter into base.
Bandgap narrowing.
Auger recombination
Base width modulation.

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