which of the following statements are correct? contracts are complete in both competitive goods markets and labour markets. social norms do not affect the outcomes in either goods markets or in labour markets. in a competitive goods market the buyers are price-takers, while in a labour market the buyers of employment (the firms) are price-setters. there is no economic rent for either the buyers or the sellers in competitive goods markets. in contrast, in labour markets the sellers receive economic rents.