Odd column
1 1
14
20
29
4 1
The rule is
1 1+(3)= 14
14+(6)=20
20+(9)=29
29+( 12)=4 1, the odd number of columns plus 3, 6, 9, 12 is equal to the next odd number of columns in turn, and 3, 6, 9 and 12 are multiples of 3 respectively.
According to the law of odd-numbered columns, even-numbered columns are multiplied by 1, 2 and 3 by 4 respectively, that is, 4,8, 12, and the final result is 27. The process is as follows.
3+(4)=7
7+(8)= 15
15+( 12)=27
There is no choice. Maybe the title was copied wrong or wrong.