Step 1:
Kanāda founded Vaisheshika Darśana, not Nyāya Darśana.
Thus, Assertion (A) is incorrect.
Step 2:
Maharshi Jaimini is indeed regarded as the founder of Mimamsa philosophy.
Hence, Reason (R) is correct.
Step 3:
Nyāya Darśana was founded by Gautama.
Step 4:
Therefore:
\[
\boxed{\text{A is not correct but (R) is correct}}
\]
Hence, the correct answer is:
\[
\boxed{\text{(4)}}
\]