C is correct Answer Because you can checking just by the Language generating by the DFA and comparing them with the Given R.E...
For Example P={null,00,0010,00110, 001110,0011110.........}
Q={null,00,01110,01010,010010,0100010......} similarily write the laguages genrating by the R & S. and match them with given Regular expressions.
by matching you will get ...
P1,Q2,R3,S4 as answer.