Answer is Option B. charlie should repeat the caliper test
I believe the answer is 41 and colder, especially for things like thawed meat, leftovers, and anything dairy based :) Hope this helped, at least a little bit
Give out posters to people and advice them how to reduce the spread of mosquitos carriers like the Aedes mosquito,Have regular thermal fogging and checks, have more doctors to help advice/prevent the spread of disease