Which Comment Would Have Most Likely Come from a Concrete-Operational

Which comment would have most likely come from a concrete-operational thinker?

A) 'I am not going to die because I sleep under the covers where the monsters can't get me.'
B) 'Grandpa is dead, but he'll come to visit us next week.'
C) 'Even though I can't imagine what death is like, it must be wonderful.'
D) 'When you're dead, you're dead.'