The result of the operation X ⟖_{X.S = Y.S} Y (right outer join) will be:

1. A

   S  Si    C     P   D
   J  1     M     S1  CA
   B  2     N     P1  AB
   R  3     H     D1  DC
   T  4     G     NULL NULL

2. B

   S  Si    C     P   D
   J  1     M     S1  CA
   B  2     N     P1  AB
   R  3     H     D1  DC
   A  NULL  NULL  H1  MD

3. C

   S  Si    C     P   D
   J  1     M     S1  CA
   B  2     N     P1  AB
   R  3     H     D1  DC
   T  4     G     NULL MD

4. DNone of these

Pick an option to check yourself, or open the answer below.

S  Si    C     P   D
J  1     M     S1  CA
B  2     N     P1  AB
R  3     H     D1  DC
A  NULL  NULL  H1  MD