Which sentence does not correctly fix this run-on sentence?
our dog chased a skunk fortunately dad was able to wash off the smell.
a.
our dog chased a skunk. fortunately, dad was able to wash off the smell.
b.
our dog chased a skunk, fortunately dad was able to wash off the smell.
c.
our dog chased a skunk, and fortunately dad was able to wash off the smell.
d.
our dog chased a skunk; fortunately, dad was able to wash off the smell.