An international trade agreement is being negotiated between many nations. An agreement text has been reached. Nation A will not sign the agreement if Nation B signs it. The probability that nation A will sign the agreement is 46%. That nation B will sign has a probability of 44%. Nation C signs the agreement with a probability of 46%. That both nation B and C sign has a probability of 37%. a) What is the probability that nation A does not sign the agreement? b) What is the probability that either nation A or nation B or both sign the agreement? c) What is the probability that either Nation B or Nation C or both sign the agreement?