Match the orbital overlap figures shown in List I with the description given in List II and select the correct answer using the code given below the lists.
Column I — P: end-on d--d overlap with like phases facing; Q: side-on p--d overlap with like phases facing; R: side-on p--d overlap with unlike phases facing; S: end-on d--d overlap with unlike phases facing
Column Ii — 1: p--dπ antibonding; 2: d--dσ bonding; 3: p--dπ bonding; 4: d--dσ antibonding