75. LED Identification

Question.3

You are inspecting a 4-pin RGB LED (common anode type).
The pins are marked in the image as Lead A, Lead B, Lead C, Lead D.
Which pin is the common anode (+)?

Lead B is the common anode (+)
Lead B is the common cathode (–)
Lead A is the common anode (+)
Each lead is independent (no common terminal)

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