What does the class instruct when sharing a multi-lane roundabout with a tractor-trailer?

Select one:
a. The class advises against driving directly alongside a large truck; preferably speed up to get in front because being to the left and right behind a truck puts you in the truck's blind spot.
b. Large trucks must yield the right-of-way to smaller vehicles driving through the roundabout at the same time, including slowing down or stopping to allow safe passage of the smaller vehicle.
c. Tractor-trailers are not permitted in roundabouts in Indiana.
d. Drivers must yield the right-of-way to large vehicles driving through the roundabout at the same time, including slowing down or stopping to allow safe passage of the large vehicle.