The data below represent the call volumes over 16 quarters from a call center at a major financial institution. Develop a forecasting model for the volume of calls (in 000 units). Which of the following statements is/are correct? Select one: a. The volume of calls to the center shows a linear, increasing trend b. The volume of call exhibits seasonality c. The volume of calls to the center shows a linear, decreasing trend d. The volume of calls to the center shows a non-linear, declining trend e. (a) and (b) are both correct f. (b) and (d) are both correct g. (a) and (c) are both correct Clear my choice