Assume you have three models A, B and C. Both A and B extend C. Assume C contains a method that you are going to change in both A and B. How can you change the method using Magento class rewrites.

A. Rewrite class C using the xpath global/models/MODULE/rewrite/C B. Rewrite the method using the xpath global/models/YOUR_MODULE/rewrite/C/METHOD C. You must rewrite both A and B using the xpaths global/models/MODULE/rewrite/A and global/models/MODULE/rewrite/B D. You must change that method directly in C