Problem: John was driving through the Mohave desert. He first added antifreeze to the water in his radiator. He noted that in his journal as case A. Unfortunately, after some time he ran out of antifreeze, and couldn't add antifreeze any more. He noted that as case B. In which case the engine might not break down, case A or case B?

A: case A

Problem: Ben and Jack both loved microorganisms. Jack decided to study more about lactic fermentation, while Ben decided to study more about protozoa. Which person read more about human muscles?

A: Jack

Problem: Keith was a studying for his chemistry exam. He got interested in solubility of different substances. For that, he conducted five tests, test A, test B, test C, test D, and test E. in test A, he used some liquid solute in a solvent in room temperature. Then in test B, he increased the temperature. In test C, he used some gaseous solute in a solvent in room temperature. But in test D, he increased the temperature. Finally, in test E he replaced the solvents in each of the earlier tests with water. In which case the solute would be more soluble, case C or case D?

A: case C

Problem: Two neighboring gulfs had different geographical features. South gulf has shallow water and is wider, while North gulf is quite deep. Both gulfs are exposed to intense wave activity throughout the year. Which gulf experiences more erosion on the ocean bottom?

A:
South