1 pts Question 6 Wyatt Oil issued $100 million in perpetual debt (at par) with an annual coupon of 7 %. Wyatt will pay interest only on this debt. Wyatt's corporate tax rate is expected to be 21 % for the foreseeable future. Wyatt's annual interest tax shield is closest to: A) $147 million. B) $4.20 million. C) $7.00 million. D) $40 million. C O A C