C-9.38 Suppose two binary trees, T1 and T2, hold entries satisfying the heap-order property (but not necessarily the complete binary tree property). Describe a method for combining T1 and T2 into a binary tree T, whose nodes hold the union of the entries in T1 and T2 and also satisfy the heap-order property. Your algorithm should run in time O(h1 +h2) where h1 and h2 are the respective heights of T1 and T2.