what will ask in business studies's viva?

my project is marketing management and product is toothpaste

The following type of questions can be asked in the viva, 
1). What permission and licences would be required to make the product?
2). What cost effective techniques will you follow for this product?
3). What cost effective techniques will you  follow for the promotion plan?
4). What should be the selling price of your competitor’s product of toothpaste?
5).What will be the profit margin in percentage to the
a. Manufacturer.
b. Wholesaler.
c. Retailer.

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