Many teenagers undergo stress, but results {of a recent study} indicate that the patterns of stress that girls experience are more likely to result in depression than are those that boys experience.
A are those that boys experience answer
B what boys experience
C boys' experience would
D boys' stress patterns do
E stress patterns of boys


Question is

Many teenagers undergo stress, but results {of a recent study} indicate that the patterns of stress that girls experience are more likely to result in depression than (patterns) what boys experience

here patterns refer to what boys experience why is B not the answer

Please advice