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:
We purchased two sets of these for our childern's 20" bikes. They are solid, well built and served us well as our childern learned to ride on the bigger bikes. Very adjustable and well constructed.

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