Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Compared with bootstrap resampling, jackknife resampling:
Option A:is done with replacement.
Option B:usually requires that the number of repetitions is equal to the sample size.
Option C:produces dissimilar results for every run because resamples are randomly drawn.

Answer: B