How should owners and managers approach the matter when a customer seeks to expand or restrict a contract on a large project?

a) by strictly interpreting the contract in the way that is most favourable to the business so that the business is not taken advantage of

b) by considering that acceding to the customer's request will weaken the business's position of power in the relationship

c) by considering whether it is possible to intimidate the customer into dropping the request

d) by treating the customer with respect while seeking a standard of reasonableness in return