Persistence Length for a Cytoskeletal Filament Is the Minimum Filament

Multiple Choice

Persistence length for a cytoskeletal filament is the minimum filament length at which random thermal fluctuations are likely to cause it to bend. Which of the following comparisons are true, considering the persistence lengths of (a) an actin filament, (b) a bundle of cross-linked actin filaments, and (c) a microtubule?

A) (a > b) and (a > c)
B) (a > b) and (a < c)
C) (a < b) and (a > c)
D) (a < b) and (a < c)
E) (a > b) and (b > c)