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When key K is open in a circuit as shown...

When key K is open in a circuit as shown in figure, an ideal voltmeter reads 1.53 V. If key is closed then ideal ammeter reads 1A and voltmeter reads 1.03 V. Then EMF of cell and external resistance R are respectively

A

1.03 V, 1.53 Omega

B

1.53 V, 0.5 Omega

C

1.53 V, 1.03 Omega

D

1.03 V, 1.03 Omega

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