Photons absorbed in matter are converted to heat. A source emitting n photon/sec of frequency ν is used to convert 1kg of ice at 0°C to water at 0°C. Then, the time T taken for the conversion

(a) decreases with increasing n, with ν fixed.

(b) decreases with n fixed, ν increasing

(c) remains constant with n and ν changing such that nν = constant.

(d) increases when the product nν increases.