1)Consider the following state transition diagram of a two-speed hair dryer,
which is operated by pressing its one button. The first press of the button turns it on to Speed 1, second press to Speed 2 and the third press turns it off.
Which of the following series of state transitions below will provide 0-switch coverage?
a. A,C,B
b. B,C,A
c. A,B,C
d. C,B,A