In general, which of the following is true of collective bargaining between a labour union and a firm? Question content area bottom Part 1 A. Only the level of employment is negotiated. B. The employer sets the wages and the union decides how many workers will be hired. C. The wage is negotiated, whereas the firm is generally free to choose the level of employment. D. The union sets the wage and the employer decides how much labour will be hired. E. The wage and the number of workers to be hired is negotiated