need help with this question.

An experiment consists of tossing a nickel, a dime, and a quarter. Of interest is the side the coin lands on. . H = heads . 7 = tails - Part (a) List the sample space. (Type your answer using letter combinations separated by commas. Example: HHH, TTT, ...) - Part (b) Let A be the event that there are at least two tails. Find P(A). (Enter your answer as a fraction.) P(A) = Part (c) Let A be the event that there are at least two tails. Let B be the event that the first and second tosses land on heads. Are the events A and B mutually exclusive? Explain your answer. Events A and B are mutually exclusive. Having two coins land heads up cannot occur when at least two coins must be tails. Events A and B are mutually exclusive because they have different probabilities. Events A and B are mutually exclusive because a coin can land on heads or tails but not both at the same time. Events A and B are not mutually exclusive. Some of the outcomes land on heads the first two tosses, and some of the outcomes have at least two tails