Hello! can you please help me with these two questions?

What is the reliability of a four-component product, with components in series, and component reliabilities of 0.76, 0.94, 0.95, and 0.907 (Round answer to four decimal places.) O A. 0.8875 O B. 0.7600 O C. 0.5864 O D. 0.6719 O E. 0.6108Suppose that the last four months of sales were 8, 5, 15, and 9 units, respectively. Suppose further that the last four forecasts were 5, 6, 8, and 12 units, respectively. What is the mean absolute deviation (MAD) of these forecasts? (Round answer to one decimal place.) O A. 3.5 O B. 1.5 O C. 7.0 O D. 17.0 O E. 14.0