JEE Math Practice Question

Let f be a twice differentiable function on (1, 6). If f(2) = 8, f’(2) = 5, f’(x) $$ \ge $$ 1 and f''(x) $$ \ge $$ 4, for all x $$ \in $$ (1, 6), then :

1. A.f(5) $$ \le $$ 10
2. B.f(5) + f'(5) $$ \ge $$ 28
3. C.f(5) + f'(5) $$ \le $$ 26
4. D.f'(5) + f''(5) $$ \le $$ 20