Why Do Unionized Workers Tend to Prefer to Take a Relatively

Why do unionized workers tend to prefer to take a relatively big share of their total compensation in the form of fringe benefits?

A) Non- unionized workers have no interest in fringe benefits.
B) Benefits such as pensions can be purchased from private providers as cheaply.
C) Unionized workers do not feel a great need for health insurance and pensions.
D) Unionized workers in a higher tax bracket do not like non- taxable forms of compensation,like pensions.
E) Unionized workers are older.