The following questions refer to the reaction 2A2B → 2C. The following mechanism has been proposed:
Step 1 (very slow) A2B2 → R + C
Step 2 (slow) A2R → C
What is the molecularity of step 2?

A) Unimolecular
B) Bimolecular
C) Termolecular
D) Quadrimolecular