Answer:
The correct answer for the given question is option(A) and option(C) .
Explanation:
To declared any variable of character we using following syntax
char variable=' value';
char letter='w';
In option(A) their is no single quotes between character w .So this is not a valid assignment.
In option(C) their is double quotes between character w,no single quotes between character w .So this is not a valid assignment.
In option(B) their is single quotes between character w .So this is a valid assignment.
So option(A) and option(C) are are not valid assignment statement.
