How does the following management developments impact bullwhip effect in supply chains (ie. would it reduce bullwhip effect or would it worsen the situation and increase bullwhip effect)? Support your answer with reasoning for each part.

Part 1. Instead of making two distinct products with different functionalities, the manufacturer decides to design and manufacture a multi-functional product to replace earlier two products with one multi-functional product

Part 2. A retailer allowing manufacturer to manage its warehouse and shelf inventory as opposed to retailer managing its own warehouse and shelf space inventory