Problem: There are two identical neighboring planets, Krypton and Gotham, inhabited by the same species of creature. Both civilizations utilize the same technology and have the same city structures. However, the creatures on Krypton use substantially more energy than the people on Gotham. Furthermore, the inhabitants of Krypton have started clearing more land than Gotham. Given the paragraph above, please answer correctly the following question: Which planet has a smaller population?

A: Gotham

Problem: Two university students studied different types of drugs for their exams. Kate studied statins, while Carol studied anti-depressants. Given the paragraph above, please answer correctly the following question: Which student learned more about removing cholesterol from plasma?

A: Kate

Problem: James spent a lot of time indoors, and didn't get out much like Rob, his friend, who loved outdoors stuff. Given the paragraph above, please answer correctly the following question: Which friend was less exposed to indoor pollution?

A: Rob

Problem: John wanted to make some lighted signs for his business. To that end, he chose noble gases, neon, krypton, and xenon. First, he kept the noble gases in containers. He called it step A. Then he passed electric current through them. He called it step B. In the process, he came up with three signs, sign A, sign B, and sign C. Sign A used neon. Sign B used krypton, and sign C used xenon. Given the paragraph above, please answer correctly the following question: In which step the the electrons would not jump to higher energy level, step A or step B?

A:
step A