The "cattle cars" that delivered Jews to the concentration camps had all of the following inhumane features except which?

a. The cars were not sanitary and did not have bathrooms or private facilities.

b. The cars would purposefully be derailed by the Nazis so the Jews would starve to death.

c. Riders were crammed into as many as possible, sometimes with 100 passengers per car.

d. Riders would ride in the winter in cold cars for as long as ten days.