It is known that f(a) = En(-1)n (n+1)anti 2x2 3x 3 424 (2n+1)! -+ 3! 5! 7! T .... The coefficient of a in the power series representation of F(ac) = So f(t2) dt is (a) 1 56 (b) 1 280 O c ) 7 24 O d) 5 42 ( e) 1 1080 Of) 1 1008