Consider the table given below:

Table : STUDENT

ADMNO	NAME	CLASS	SCORE
A001	Amit	12A	90
A002	Amit	12B	91
A003	Bhavana	12A	90
A004	Yamini	12A	89
A005	Ashok	12B	95

Using the STUDENT table, you want to select all records where the CLASS is either '12A' or '12B'. Which of the following SQL commands correctly achieves this?

A. SELECT * FROM STUDENT WHERE CLASS = '12A' OR CLASS = '12B';

B. SELECT * FROM STUDENT WHERE CLASS IN ('12A', '12C');

C. SELECT * FROM STUDENT WHERE CLASS IN ('12A', '12B');

D. SELECT * FROM STUDENT WHERE CLASS = '12A' AND '12B';