For moving two level up in the file hierarchy system using cd command once, we separates ( . . ) by which symbol?

For moving two level up in the file hierarchy system using cd command

1.	For moving two level up in the file hierarchy system using cd command once, we separates ( . . ) by which symbol?
A.	/
B.	\\
C.	//
D.	\
E.
Answer» B. \\