Coolsavings.com is one of the largest on-line distributors of in-store coupons, sales announcements, and mail-in rebates offered by national retailers and Internet commerce sites. Its marketing department keeps track of current external environmental changes. Although some information is relatively easy to collect, analyzing and forecasting one type of trend is extremely difficult, and it is the most important factor for a company to understand. What is the trend?a. socialb. technologicalc. economicd. demographic