Which of These Is Currently True for the Chair of the Federal

Which of these is currently true for the chair of the Federal Reserve?

A) The chair position is a term of just two years and is nonrenewable.
B) The chair position requires a background in economics or finance; the four-year term is renewable.
C) The chair position requires a background in banking or finance; the two-year term is nonrenewable.
D) The chair position has no formal qualifications; the four-year term is renewable.