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 have poor dexterity in my hands due to years of abuse from close contact sports.  Despite being young, I feel the effects everyday when typing for pro-longer periods of time.  A dull pain will begin to radiate throughout my hands.  The grip master has helped this immensely.  I typically do exercises that promote the dexterity of the individual fingers as well as overall grip strength.  Within the first week, I definitely noticed improvement in the overall range of motion for my hands.  The only reason I gave this a 4 is due to the lack of a workout regiment/material that could have been included in the packaging.  However, these were available on the manufacturers website.

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