(March 13, 2020, 8:21 AM EDT) -- CHARLESTON, S.C. — A defendant in the multidistrict litigation for the firefighting agent known as aqueous film forming foam (AFFF) on Feb. 27 filed a general denial and affirmative defenses in South Carolina federal court contending that the plaintiffs have not sufficiently alleged grounds upon which any relief could be granted (In re: Aqueous Film Forming Foam, MDL 18-2873, D. S.C.)....