Task: Sentiment_Analysis
Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
Fantastic knife sharpener!  I was dubious as it is a simple design and seems almost old-fashioned compared to some of the other sharpeners on the market, but this baby works like a dream.  It sharpened up even the dullest old knives in our cupboard.  Highly recommended!

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