JEE Advanced 2020 Full Test 2 Paper 2

Let A1,A2,...,An be a regular n-sided polygon inscribed in a circle, three points Ai,Aj,Ak are randomly chosen, where i,j,k are distinct integer between 1 and n both inclusive. Denote by Pn the probability that the triangle AiAjAk is obtuse which of the following statements is\/are true: