In the circuit above R is a resistor whose resistance increases with increases with increase in temperature L₁ and L₂ are identical lamps. If the temperature of R increases

A. L₁ becomes brighter and L₂ becomes dimmer  
B. L₁ becomes brighter and L₂ does not change
C. L₂ becomes dimmer and L₁ does not change
D. L₁ becomes dimmer and L₂ does not change
E. L₁ and L₂ becomes brighter

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Correct Answer: A