<p><img alt="(6) Given set S of points in the Euclidean plane, convex hull of S always Yes No Dont know Yes No Don t know Yes No Don t" src="https://media.cheggcdn.com/media%2Fcba%2Fcba32140-470d-4d0c-9c7b-79d703946c4e%2FphpLq7xx0.png"
<p>What is the output of the following Java program?</p><p>package test; import java.util.*; class Main { public staticvoid main(String[] argh) { String key[] = { null, "B", null, "D","E" }; Integer