Which of the following are taxable corporate sponsorship payments under the unrelatod business income tax? a. The amount of the payment by the corporation to the exempt organization is contingent on the attendance at one or more events. The amount of the payment by the corporation is determined by the number of b. his lay ehe exempt organization's internet page where the corporation s logo is The payment by the corporation to the exempt organization results in the corporate logo appearing in the exempt organization's monthly newsletter, together with an endorsement of the corporation's products or services. Only a. and b. are taxable. a., b., and c. are all taxable. c. d. e