Which sentence is punctuated correctly?
A) The new fitness center, according to the owners of the Aggie Club will be
finished by May 2014.
B) The new fitness center according to the owners of the Aggie Club, will be
finished by May 2014.
C) The new fitness center according to the owners of the Aggie Club will be
finished by May 2014.
D) The new fitness center, according to the owners of the Aggie Club, will be
finished by May 2014.