Use the graph of y f x assuming f x 0 i x bord and f x 0x f to answer parts A through F Q Q AV VA A Identity intervals on which the graph of t is concave upward Choose the correct answer below OA The graph is never concave upward OB a c c e g h OC d e g h OD b c c e g h OF a b d e g h OE a b e g O G a c c d e g OH e g B Identify intervals on which the graph of f is concave downward Choose the correct answer below OA a c c e g h OC b c c e g h OE d e g h OG b ck c dk e a OB a c c d e g OD a b e g OF e g OH The araph is never concave downward