Best piston size

Ive just had my 2002 honda cr 250 cylinder reconditioned profesionaly and its a standard size of 66.40 just wondering what would be the best pison size for it as below.

HONDA CR 250 (2002-04)

Available piston dimensions:

A = 66,34 mm

B = 66,35 mm

C = 66,36 mm
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xr70
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La crescenta, CA US
3/3/2018 6:25pm
Go with B

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