cin.getline$($ superstring, $30)$;

is equivalent to which of the following?

cin.getline$($ superstring, $30,\text{'}\backslash$t$\text{'})$;

cin.getline$($ superstring, $30,\text{'}\backslash 0\text{'})$;

cin.getline$($ superstring, $30,\text{'}$

$\text{'})$;

cin.getline$($ superstring, $30,\text{'}\backslash$s$\text{'})$;