Read the following information carefully and answer these questions.
Six boys A, B, C, D, E and F are marching in a line. They are arranged according to their height, the tallest being at the back and the shortest in front.
• F is between B and A.
• E is shorter than D but taller than C who is taller than A.
• E and F have two boys between them.
• A is not the shortest among them.
Who is the shortest ?