Step 1: Erechtheion, Athens.
\n- Known for its Porch of the Caryatids, featuring sculpted female figures as columns. \n\[\nP \rightarrow 2 \; (\text{Caryatid})\n\] \n\n \n
Step 2: Temple of Karnak, Luxor.
\n- Egyptian temple complex, notable for its Hypostyle Hall, a vast area of columns. \n\[\nQ \rightarrow 1 \; (\text{Hypostyle Hall})\n\] \n\n \n
Step 3: Hagia Sophia, Istanbul.
\n- Byzantine church, renowned for its innovative use of pendentives to support the large central dome. \n\[\nR \rightarrow 3 \; (\text{Pendentive})\n\] \n\n \n
Step 4: Pantheon, Rome.
\n- Famous Roman temple distinguished by its large dome and central circular opening, the Oculus. \n\[\nS \rightarrow 5 \; (\text{Oculus})\n\] \n\n \n
Step 5: Elimination.
\n- Option (A) provides a direct match: P-2, Q-1, R-3, S-5. \n\n \n
Final Answer: \n\[\n\boxed{\text{(A) P-2, Q-1, R-3, S-5}}\n\]