Im doing a Quiz from udemy course to pass the odoo certificate (v16) and Im sure that the answer to this question is wrong. 

Question:

Sales: What will the scheduled purchase order date be if you validate a sales order on October 25th, knowing the product is set to ‘’Buy’’ with a ‘’MTO’’ route, with a ‘’Customer Lead Time’’ set to 10 Days, a ‘’ Vendor Lead Time’’ set to 6 Days, and ‘’ Company Security Lead Time’’ for purchases is set to 2 Days?

Answer:

October 23rd

October 27th (correct)

November 1st

This answer is none sense, does anybody know how it works the times in odoo?