Given below are Assertion (A) and Reason (R). Consider them in the light of Thomas Aquinas and mark the correct answer.
Assertion (A) God is the uncaused cause of the world.
Reason (R) Anything that begins to exist has to be caused to exist by something that already exists.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not the correct explanation of A

C. A is true and R isfalse

D. A is false and R is true

Answer: Option A