In the least squares equation relating the number of hammers produced (Y) and number of workers employed in that shift (X) is given by Y=10+5X, the coefficient value of 5 indicates A. for each unit increase in hammer, the worker level increases by 5 . B. intercept on the axis representing hammers. C. for each unit increase in number of workers, the number of hammers produced increases by 5 . D. the number of workers increases by 10