Which of These Statements Is True

Multiple Choice

Which of these statements is true?
I. Wisconsin is the only state known to have a governor who has wished to restrict the power of public employee unions.
II. Only private-employee unions can call strikes, while public-employee unions tend to contribute less for their health insurance premiums.
III. Only public-employee unions can call strikes.

A) I only
B) II only
C) III only
D) I, II, and III