If an object's position over time is given by the function d(1) = (12 + 3 ) e- 2 for 1> 0 when is the object's position increasing and concave up ? Select one: a (0, 1.00) O b. (1.00, 1.76) O C. (1.76, 3.00) O d. (3.00, 6.24)