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A 10 Watt electric heater is used to hea...

A 10 Watt electric heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of water and the container rises by `3^@` K in 15 minutes. The container is then emptied, dried and filled with 2 kg of oil. The same heater now raises the temperature of container-oil system by `2^@` K in 20 minutes. Assuming that there is no heat loss in the process and the specific heat of water as `4200 Jkg^(-1) k^(-1)`, the specific heat of oil in the same unit is equal to

A

`1.50 xx 10^3`

B

`2.55 xx 10^3`

C

`3.00 xx 10^3`

D

`5.10 xx 10^3`

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