Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I used the disk in both my large screen tv/dvd combo and in my portable dvd player. I still get the same type of play on the combo. I really can't tell whether it worked or not because the portable didn't have a problem to begin with.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: C: neutral