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

Input:
SIZE:  This ball is supposed to be 65 cm (26 in) in diameter.  When inflated fairly firmly, it is BARELY 24 inches in diameter.  Even the measuring tape provided will indicate proper inflation size at only 25 inches.  (Although, if inflated to 25 inches, the ball is dangerously over-inflated.)  One star off for this error!  The balls from this vendor are available in a series of four inch steps.  So, at 24 inches, this "26-inch" ball is midway between the correct size and the next smaller one in the series, nominally 22 inches.

QUALITY:  We bought the PRO series to get this high quality.  It is truly round (unlike the normal series) and it is very durable.  No stars off here.

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