Excel Formula to match the coloumns [closed]

im making mcqs for that i have to make answere keys columns options are pak ind usa uk and fifth one ans pak so what i want that if column 5 which is ans (pak) match with coulmn A than write A and if Column 5 (pak) match with column 2(ind) than B and if column 5 (pak) match with column 3 (usa) than C or if column 5(pak) does not match with any column than write none of the above