1.

Observe the following piece of code? def a(n): if n == 0: return 0 else: return n*a(n - 1) def b(n, tot): if n == 0: return tot else: return b(n-2, tot-2)

A. Both a() and b() aren’t tail recursive
B. Both a() and b() are tail recursive
C. b() is tail recursive but a() isn’t
D. a() is tail recursive but b() isn’t
Answer» D. a() is tail recursive but b() isn’t


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