Motion in a Straight Line

The displacement x versus time graph is shown below.
(A) The average velocity during 0 to 3 s is 10m∕ s
(B) The average velocity during 3 to 5 s is 0m∕ s
(C) The instantaneous velocity at t=2 s is 5m∕ s
(D) The average velocity during 5 to 7 s and instantaneous velocity at t=6.5 s are equal
(E) The average velocity from t=0 to t=9 s is zero Choose the correct answer from the options given below