Quiz: A backslash in the output

From the below strings, check those that will have precisely one backslash \ in the output if you print them.

0	"Level\n\t2"
0	"Level\n\nTwo"
1	'Storey\nTwo'
1	'Tab is \t'
0	"Using a tab\there"
1	"//\\"	The output is `//\`
1	'//\\'	One backslash escapes the other here: `//\`.
1	'\"'	No escaping here, the string appears as is: `\"`.

Comments

The main thing to look at here is the quotes. They determine the way the \-prefixed characters are escaped.