(a) Choose the correct time series plot. (i) (ii) (iii) (iv) What type of pattern exists in the data? The time series plot shows a trend with seasonality. Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. y-intercept, b0= Slope, b1= MSE = What is the average cost increase that the firm has been realizing per year? If required, round your answer to two decimal places. Compute an estimate of the cost/unit for next year. If required, round your answer to two decimal places. Do not round your intermediate calculations