Which of the following is the real purpose of filling the earthing pit with alternate layers of charcoal and salt?
A.	Easy availability
B.	Cheap
C.	Reduction of the earth's resistance
D.	None of these
Answer:C
Which of the following is the real purpose of filling the earthing pit with alternate layers of charcoal and salt?
A.	Easy availability B.	Cheap C.	Reduction of the earth's resistance D.	None of these