Question: Where can I buy these cakes?
Answer 1-You can buy these from the supermarket. (to refer to any supermarkets)
Answer 2-You can buy these from supermarkets.
I think that we can say ".......the supermarket" to refer to a particular supermarket and to refer to any supermarket, but I am not quite sure if I might also say or if I have to say "........from supermarkets. (without article the before supermarkets" to refer to any supermarket.
Are both usages correct?