Two of the following statements are true, and one is false. Identify the false statement:

a$.$ The following statement is legal in C#:

char department $=\text{'}5\text{'}$;

b$.$ The following statement is legal in C#:

char department $=\text{'}\backslash$f$\text{'}$;

c$.$ The following statement is legal in C#:

char department $=\text{'}32\text{'}$;