In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by__________________?

In furnaces operating at very high temperature (say) 1250°C, e.g. soa

1.	In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by__________________?
A.	Conduction
B.	Convection
C.	Radiation
D.	Cannot be predicted
Answer» D. Cannot be predicted