Question: Define p:union that represents the set union in racket code. The implementation of (p: union p1 p2) must interleave each element of p1 with an

Define p:union that represents the set union in racket code. The implementation of (p: union p1 p2) must interleave each element of p1 with an element of p2 (see test cases). Interleaving is desirable because if p1 is infinite and we simply concatenate the two promise lists, then we would never observe elements of p2. Solve using racket code.

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