Worldwide unit sales of wearable, miniature action-capture cameras are reliably projected to grow about a. 10% annually through Year 15. b. at rates that can range from as little as 4% annually to as high as 8% annually. c. 10% annually for Years 6-10, and then slow gradually to 4% annually by Year 15. d. at 6-8% annually during the Year 6-Year 20 period and at 4-6% annually during the Year 11-Year 25 period. e. at 6-8% annually during the Year 6-10 period and at 4-6% annually during the Year 11-15 period.