I have two tables(Tabl_A and Table_B) in Excel as shown in the following figure. I want to merge them so that output is like the third table (Tabl_C). How can I do this??

​

Table_A

NumberOfSection Control_Set
1 2
2 6
3 15
​_______________________

Table_B

NumberOfSections Zoo_Set
1 3
3 43
4 22

___________________
Table_C

NumberOfSections Control_Set Zoo_Set
1 2 3
2 6
3 15 43
4 22
_____________________