The correct options are
B 1, 2, 3, 4, 3, 2, 1
C 1, 3, 5, 7
As we move vertically from left to right, note that the number of small squares in the columns are 1, 2, 3, 4, 3, 2 and 1.
As we move horizontally from top to bottom, the number of small squares in the rows are 1, 3, 5 and 7.
Thus, 1, 2, 3, 4, 3, 2, 1 and 1, 3, 5, 7 are correct options.