26. The velocity of a race car over a certain time during a race is given by the function v (t). Which of the following statements will give the average acceleration of the race car from time t = 1 to t = 7? A. v '(7 ) - v '(1) 2 B. 1 6. ,v (t) dt C. 1 | v (t) | dt D. V (7 -V (1) 7 6 v (t) dt E. v(7) -v(1) 6