There are five friends F, G, K, O, and P, who got different grades A, B, C, D, E in an examination, where A grade means lowest and E means highest grades. F neither got highest nor lowest grade. Number of peoples having higher grade than K and number of peoples having lower grade than K are equal. O gets the lowest grade among them. G does not get highest grade but his grade is better than K.

Who got grade B?