13. Incorrect. The answer is false not true. The probability of producing LPG from reservoir A is equal to 100% because propane and butane are the necessary hydrocarbons to produce LPG. In probabilistic terms: P (LPG in reservoir A) = 1. Schaum's Outline presents this result as a basic axiom of probability. The probability of producing LPG from reservoir B is 0% because it does not contain either propane or butane. In probabilistic terms, P (LPG in reservoir B) = 0.