Match All Items in Group 1 with Correct Options from Those

Match all items in Group 1 with correct options from those given in Group 2.
List I  List II
p. Regular Expression   1. Syntax analysis
q. Push down automata   2. Code Generation
r. Dataflow analysis   3. Lexical analysis
s. Register allocation   4. Code optimization

A) P-4. Q-1, R-2, S-3
B) P-3, Q-1, R-4, S-2
C) P-3, Q-4, R-1, S-2
D) P-2, Q-1, R-4, S-3