Which revision BEST uses punctuation to combine sentences 8 and 9?
F. After the tragedy, the people of the city were determined to rebuild, they had a two-step plan.
G. After the tragedy, the people of the city were determined to rebuild, so they had a two-step plan.
H. After the tragedy, the people of the city were determined to rebuild; they had a two-step plan.
J. After the tragedy, the people of the city were determined to rebuild: a two-step plan