Which of the following is not an error in the following FORTRAN statements: WRITE (6, 16), A, Z, N, 16 FORMAT (F4.2, 3X, I8, 5X, I4)
1) Use of comma before A is unacceptable
2) The statement number of the FORMAT statement must be 6 instead of 16
3) Use of comma after N is unacceptable
4) The real variable Z is given the integer field specification I8.