a) List the customers (their ID).

b) List the insurance contracts (their ID) whose duration is longer then five years.

c) List the information of policies whose maximal coverage is above $10000.

d) List the customers (their names) whose beneficiary in at least one contract is not themselves

[32 points) For each of the queries above, express tight lower and upper bounds of the cardinality of the resulting relation, given the input cardinalities, Customer, |Insurance Contract), and Policy - For example, for Profession (Customer), the bounds are: min(1, Customer)