I need answers for Chapter 5 Problem 28. Render ISBN # 13:978-0-13-45316-1. Problem Reads: sales of industrial vacuumcleaners at R. Lowenthal supply Co. over the past 13 months are asfollows: sales ($1,000s) Month. First row is 11 sales MonthJanuary. Need the following a) using a moving average with threeperiods, determine the demand for vacuum cleaners for next Feb.also (B), (C), (d) answers? this problem can be found on p. 179. intextbook Quantitative Analysis for Management 13 th. ed. Render.Here is a problem: Sales of industrial vacuum cleaners at R.Lowenthal Supply co. over the past 13 months are as follows.Heading: Monthly Sales are in ($1,000s - Month). January Sales (11)($1,000s) February Sales (14) March Sales (16) April (10) May (15)June (17) July (11) August (14) September (17) October (12)November (14) December (16) January (11). Question (a). Using amoving average with three periods, determine the demand for vacuumcleaners for next February. (b) Using a weighted moving averagewith three periods, determine the demand for vacuum cleaners forFebruary. Use 3, 2, and 1 for the weights of the most recent,second most recent, and third most recent periods, respectively.For example, if you were forecasting the demand for February,November would have a weight of 1, December would have a weight of2, and January would have a weight of 3. (c) Evaluate the accuracyof each of these methods. (d) What other factors might R. Lowenthalconsider in forecasting sales?