Consider business investment (i.e., component I in GDP), which of the following statements is NOT correct? . Investment tends to happen in waves as one firm's investment stimulates other firms to make similar decisions. b. Investment decisions depend on many factors including firms' expectations about future demand. c. Firms always make more investments when interest rates or borrowing costs decline. d. Within any industry, investment by one firm may induce other firms to invest because if they don't, they may lose market share and eventually have to leave the industry