I'm a bit confused on this one. The options seem similar, and I'm not sure which one is the most accurate way to filter PDF files. I'll make sure to review the file handling concepts before the exam to be better prepared for questions like this.
Okay, let me see. I know we need to filter by the file extension, so I'm leaning towards either C or D. The question mentions "string comparison", so D might be the way to go. I'll make a note to double-check that during the exam.
Hmm, I'm not sure about this one. I was thinking B might work, but I'm not confident that File.Name contains PDF is the right approach. I'll have to think this through more carefully.
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