Choose the Answer Which Best Rewords the Italicized Portion

Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
A dozen US states failed to pass mandated labeling for products that contain GMOs. Some European countries already mandate GMO labeling, but efforts to pass legislation in the United States have met resistance.
What adjective could the writer insert after "met" to emphasize the type of "resistance"?

A) met resistance.
B) met some resistance.
C) met vital resistance.
D) met fierce resistance.