Wild & Scenic River Tours, Inc., is a corporation. Its directors and shareholders discover that its rival, Bold and Outstanding Creek Adventures, Inc. has defamed Wild & Scenic causing harm to its shareholders. After a shareholder makes written demand to the directors to take action against Bold and Outstanding, to no avail, the shareholder may bring a lawsuit against Bold and Outstanding, Inc. pursuant to

A. the alter ego theory. B. an ultra vires action. C. a shareholder derivative lawsuit. D. piercing the corporate veil.