Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
To be fair, I haven't used this product since I purchased it a month ago.  I bought it thinking I'd save money.  I can't find a box of dry milk under $12, which you need in order to make yogurt.  A large container of yogurt is $3.99, sometimes less with coupons.  To bad I threw out the box, maybe could have returned it.  Instead of saving money, I've lost shelf space.

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