Consider the following statements : In thermoelectric refrigeration, the coefficient of performance is a function of
1. electrical conductivity of materials.
2. Peltier coefficient. 3. Seebeck coefficient.
4. temperature at cold and hot junctions.
5. thermal conductivity of materials. Of these statements :
(a) 1, 3, 4 and 5 are correct
(b) 1, 2, 3 and 5 are correct
(c) 1, 2, 4 and 5 are correct
(d) 2, 3, 4 and 5 are correct.