25. If the array a [10, 2, 16, 12, 14, 6, 18, 8, 20, 4] is sorted with heapsort, which response below depicts a after the first phase of the heapsort algorithm discussed in class, when its elements have been arranged in partial order? A. [2, 4, 6, 8, 10, 12, 14, 16, 18, 20] B. [2, 8, 6, 10, 4, 16, 18, 12, 20, 14] C. [20, 18, 14, 6, 16, 12, 10, 8, 2, 4] D. [20, 14, 18, 12, 10, 6, 16, 8, 2, 4