In "Dark They Were, and Golden-Eyed," what does Mr. Bittering do to cope with his fears about living on Mars? Choose two options.a. He investigates Martian ruins to understand them better.b. He tries to build a rocket to take his family back to Earth.c. He persuades his wife and family to return with him to Earth.d. He spends time with other settlers, who talk him out of his fear.e. He concentrates on his work on their small farm and other chores.