contestada

The Grand Canyon is 277
miles long and 18 miles
wide. It was formed by
the Colorado River.
These sentences have
been combined using an
appositive phrase. Which
sentence below
punctuates the
appositive phrase
correctly?
A. The Grand Canyon 277 miles long
and 18 miles wide, was formed by
the Colorado River.
B. The Grand Canyon, 277 miles
long and 18 miles wide, was formed
by the Colorado River.
C. The Grand Canyon, 277 miles
long and 18 miles wide was formed
by the Colorado River.