Take a look at the following PL/I variables. Which of the given conditions is NOT correct? DCL INFILE FILE RECORD INPUT; DCL EOF BIT(1) INIT (‘0’B); ON ENDFILE (INFILE) EOF = ‘1’B; (1) DO WHILE (NOT EOF); (2) DO WHILE (^EOF); (3) DO WHILE (EOF = ‘0’B); (4) DO WHILE (EOF ^= ‘1’B);