68 You are carrying triethylamine, methyl methacrylate and isoprene in your multiple-product tankship. Which of the following statements is true?

A. Isoprene may be carried in a cargo tank adjacent to either of the other two cargoes.
B. Methyl methacrylate may not be carried in a tank adjacent to a pump room.
C. Methyl methacrylate must usually be heated to maintain its stability.
D. Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine.