Hot oil (c_p = 2.1 kJ/kg · K) at 110°C and 8 kg/s is to be cooled in a heat exchanger by cold water (c_p = 4.18 kJ/kg · K) entering at 10°C and at a rate of 2 kg/s. The lowest temperature that oil can be cooled in this heat exchanger is
(a) 10.0°C

(b) 33.5°C

(c) 46.1°C

(d) 60.2°C

(e) 71.4°C