I need a very detailed explanation of how to solve this problem please. I didn't understand the earlier explanation from a tutor. I'm just not understanding this one. Tutor was great though. Thank you!

Let X be a discrete random variable following a geometric distribution with p = 0.3. Let Y be another discrete random variable defined by Y - min (0, X -4). In other words, Y =0 if X" 4. Find Var [Y]. O 4.0894 3.7000 3.3105 3.5052 3.8947