Which sentences below indicate that arnold’s company is a monopoly? a. arnold started a software company that offers a new kind of technology for secure transactions b. it is very popular with online merchants. c. the product is incompatible with other types of online checkout systems so, the merchant must switch to arnold’s company to use the security features. d. soon, almost all merchants prefer arnold’s technology and competing technologies start to lose market share. e. arnold now has over 80 percent of the market and will soon likely own the entire market because his technology is only compatible with his interface there's more than one answer