Entity Framework convention for 1to1 relationship

Question

I've looked through various sources and in most of them I see the convention of Entity Framework for 1to1 relationship as eg.

public virtual Product Product {get;set;}

However I found also:

public virtual Product Products {get;set;}

Would there be some specific reason to use the latter convention? I know in one to many it goes Products as below, but I'm particularily interested about 1to1 convention.

public virtual ICollection<Product>Products{get;set;}

Answer 1

That was a Typo in those examples you saw.

Plural names typically indicate a collection, even if there is only 1 item in the collection.

Keep it non-S.