Consider the following trees. Classify each as either full, complete, both full and complete, or neither full nor complete. Circle your answer and provide explanation why. Also, which of the trees can be considered a heap? If they are not, why not? (a) (b) 12 10 11 33 13 20 41 19 7 10 12 15 17 18 15 25 25 Select one - full - complete - both full and complete neither full nor complete Explanation: Heap? Yes Explanation: No Select one - full complete both full and complete neither full nor complete Explanation: 17 23 Heap? Yes Explanation: No 3 17 + (c) (d) 10 30 70 10 Select one full complete - both full and complete - neither full nor complete Explanation: 15 19 Heap? Yes Explanation: No 20 17 40 50 15 18 14 3 7 12 6 10 5 8 2 11 Select one - full complete both full and complete neither full nor complete Explanation: Heap? Yes Explanation: No 4 / 17 < < \ => +