39! is divided by 41. Then what is the remainder for this?
Choose the correct option: A) 1 B) 3 C) 5 D) 6 E) 7

Rationale: substituting p = 41 in the wilson ' s theorem , we get 40 ! + 141 = 0 40 × 39 ! + 141 = 0 − 1 × 39 ! 41 = − 1 cancelling - 1 on both sides , 39 ! 41 = 1 a
Answer: A