题目:What will be the output of the following Python code? >>> l=["good", "oh!", "excellent!", "#450"] >>> [n for n in l if n.isalpha() or n.isdigit()]
A. ['oh!', 'excellent!', '#450']
B. ['good', '#450']
C. ['good', 'oh', 'excellent', '450' ]
D. ['good']
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