Consider the given two statements:
Assertion (A): A piece of DNA, if needed to be propagated during recombinant DNA procedures, requires a vector.
Reason (R): The vectors provide the origin of replication.
 
1. Both (A) and (R) are True but (R) does not correctly explain (A).
2. (A) is False but (R) is True.
3. (A) is True but (R) is False.
4. Both (A) and (R) are True and (R) correctly explains (A).
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