In the circuit of figure the function of resistor R and diode D are

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[A].	to limit the current and to protect LED against over voltage
[B].	to limit the voltage and to protect LED against over current
[C].	to limit the current and protect LED against reverse breakdown voltage.
[D].	none of the above.

Answer: Option C

Explanation:

Resistance limits current and diode is reverse connected and therefore protects LED against reverse breakdown.