1. Which of the following are valid array declarations? If it is not valid write a valid statement. (2 pts) a. char[] charArray -new char [26]; b. int [101 words-new int[ c. char[ letters-'a' , 'b','' d. double [3] nums -13.5, 35.1, 32.0 2. Write a method that takes an array of Strings as a parameter and the number of elements currently stored in the array, and returns a single String that is the concatenation of all Strings in the array. (2 pts) ese