State whether each of the following variables is categorical or numerical. if categorical, give the level of measurement. if numerical, is it discrete or continuous? a. method of payment (cash comma credit comma etc. )used when buying a new laptop b. actual cost (in dollars comma euros comma etc. )of a student's textbooks for a given semester c. the ideal cooking temperature (in fahrenheit comma celsius comma etc. )for a chicken pot pie d. size of a vanilla chai tea (small to extra large )a. determine the classification for the method of payment variable. choose the correct answer below.

Mr. beautiful, an organization that sells weight training sets, has an ordering cost of $40 for the bb-1 set. (bb-1 stands for body beautiful number 1.) the carrying cost for bb-1 is $5 per set per year. to meet demand, mr. beautiful orders large quantities of bb-1 seven times a year. the stockout cost for bb-1 is estimated to be $50 per set. over the past several years, mr. beautiful has observed the following demand during the lead time for bb-1: demand during lead time probability40 0.150 0.260 0.270 0.280 0.290 0.1total 1.0the reorder point for bb-1 is 60 sets. what level of safety stock should be maintained for bb-1?