Okay, let me think this through step-by-step. COALESCE returns the first non-null value, so A and C should work. NULLIF returns NULL if the two arguments are equal, so B should work, but D and E might have issues.
Okay, I've got this. The question is asking us to write the code at line 02, and the options are all different ways to accept user input. I'm going to go with option A - "name = input()" since that seems like the most natural way to do it.
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