A supercritical boiler is one that operates above the pressure and temperature of following values_____________________?

A. 218 kg/cm2 abs and 540C

B. 100 kg/cm2 and 540C

C. 1 kg/cm2 and 100C

D. 100 kg/cm2 abs and 373C

E. 218 kg/cm2 abs and 373C
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