Six friends \(A, B, C, D, E,\) and \(F\) are sitting in a row facing north. \(A\) is immediately to the left of \(B\). \(C\) is second to the right of \(B\). \(D\) is at one of the extreme ends. \(E\) is not a neighbour of \(A\). \(F\) is immediately to the right of \(D\). Which of the following is definitely true?