In a certain place, two production management methods A and B were tried out in two factories. Their pilot work was carried out as follows: Method A was tried out in a large factory with leadership of high education level; Method B was tried out in a small factory with leadership of low education level, and Method A resulted in good economic benefits; Method B not good. Therefore, it was concluded that Method A was the reason for achieving better economic benefits.
The following options can weaken the above conclusion, except: Compared with Method A and Method B, Method B is actually better. Unfortunately, the foundation of the small factory that implements this method is too poor.