Assertion: Sodium p-dodecyl benzene sulphonate is a sufactant
Reason: It contains water soluble `SO_3^(-)` group and water insoluble `-C_6 H_4 - C_(12) H_(23)` group.
A. Both A and R and true and R is the correct expalantion of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true