Q21Comprehension3 Marks25 Feb 2024PassageBased on the above data, answer the given subquestions. Let XXX and YYY be i.i.d. Uniform{−1,0,1}\operatorname{Uniform}\{-1,0,1\}Uniform{−1,0,1}. Define a new random variable Z=∣X+Y∣Z=|X+Y|Z=∣X+Y∣, where ∣⋅∣|\cdot|∣⋅∣ denotes the absolute value.Find the PMF of ZZZ.ABCD