create a ER diagram for supermarket.

 

There's an entity called "Product" and there are three types of product ( food, drink, sundry ) 

 

The requirements says "The details of all products must include a unique identifier assigned by Head company, a product name , sale price, cost price, and description. For food items, they need to include the details from all products and include details of the size, weight, if it is vegan or not, and if it is vegetarian or not."

 

in this case, what does "For food items, they need to include the details from all products" mean? 

 

Does that mean I need to make attributes for Product and use FK for Food entity? or I need to make attributes for Food ?