The Paragraph Below Is Developed by a Specific Mode or Pattern

The paragraph below is developed by a specific mode or pattern. Read the paragraph; then answer the question(s) .
(1) The chronograph is a watch that measures time in different ways. (2) Its dial has two, three, or even four smaller subdials for this purpose. (3) A dial at the 9 o'clock mark might measure continuous seconds; one at six o'clock might count total hours up to twelve. (4) Specific features like these are useful to people who must measure time with great accuracy. (5) The stopwatch dial, for example, is useful to athletes who must time and assess their performance. (6) Another possible feature, the tachometer, can be used by race-car drivers to measure the speed of Formula One racers. (7) The chronograph's radium dial with luminous numbers and hands is helpful to military personnel conducting operations at night. (8) A waterproof version with rubber gasket rings can be used by divers who need to mark the tides. (9) Because of the chronograph's fancy, technical details, these timepieces project an active, competent, outdoor image.
Transitional words or phrases are used in which sentences?

A) (3) , (4)
B) (5) , (6)
C) (2) , (7) , (8)