PART a If Class-Action Lawsuits Are Banned, Then Big Business

Short Answer

PART A If class-action lawsuits are banned, then big business will win. Hence, big business will not win, since class-action lawsuits will not be banned.
Which of the following correctly expresses the form of this argument? PART B
Which of the following substitutions proves the argument invalid?
A) C = Nicole Kidman was beheaded, B = Nicole Kidman is dead.
B) C = Bob Smith was beheaded, B = Bob Smith is dead.
C) C = Abraham Lincoln was assassinated, B = Abraham Lincoln is dead.
D) C = George Washington is dead, B = George Washington was assassinated.
E) C = George Washington was beheaded, B = George Washington is dead.