The device used to empty the boiler, when required and to discharge the mud, scale of sediments which are accumulated at the bottom of the boiler is known as

The device used to empty the boiler, when required and to discharge th

1.	The device used to empty the boiler, when required and to discharge the mud, scale of sediments which are accumulated at the bottom of the boiler is known as
A.	Safety valve
B.	Stop valve
C.	Fusible valve
D.	Blow of cock
Answer» E.