A teacher asked her students to make a container to store hot chocolate. The container should meet the following criteria and constraints: it should be able to keep 3 gallons of hot chocolate warm for a four-hour period on a cold day it should cost no more than $20 its outer surface should be cooler than the liquid it is holding inside by at least 78°F The students were divided into four groups. Each group designed a small prototype of the large container and poured 150 mL of hot chocolate in it for testing. The table below shows the details of each container. Group AGroup BGroup CGroup D Outer Material of the ContainerMetalPlasticMetalPlastic Insulating Material Used Inside the ContainerFoamAluminum foilClothPaper Cost$15$10$20$5 Temperature Drop on the Outside of the Container70°F75°F80°F70°F Time for Which the Contents Remain Warm4.5 hours2.5 hours1 hour30 minutes How could the designs be combined to best meet the criteria and constraints? A. has an outer surface that is as cool as Group C's design and preserves heat like Group A's design B. preserves heat like Group C's design and is as inexpensive as Group D's design C. preserves heat like Group A's design and has an outer surface that is as cool as Group B's design D. has an outer surface that is as cool as Group B's design and is as inexpensive as Group D's design