Moving only left and down, how many paths are there from X to H? H X

Which of the following are trees and which are forests? R N 0 0 S M P P T A: Is a forest A: Is a tree Q C: Is a forest C: Is a tree 0 U K R N T U N 0 $ V R H B: Is a forest B: Is a tree P K Q D: Is a forest D: Is a tree X R P I

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- - Given points P₁(-1,3, — 2),P₂(4,¹, — 7), and P²(5,2,6), find P P₂XP P3 13 OA.-21, -70,-7) O B. <-21, -70,7) OC. <-21,70,-7) OD. (21, -70,7)