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:
My first experience with an ebook and was most enjoyable - good story line - loved the characters. Just wish the book was longer and the characters and story line more developed and in depth. All in all a good clean read. Will look for more work by the author.

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