Mackenzie is considering conducting her business, Mac561, as either a single-member LLC or an S corporation. Assume her marginal ordinary income tax rate is 37%, her marginal FICA rate on employee compansation is 1.45%, her marginal self-employment tax rate is 2.9%, and any employee compensation or self-employment income she receives is subject to the 0.9% additional Medicare tax. Also assume Mac561 generate $200,000 of business income before considering the deduction for compensation Mac561 pays to Mackenzie and Mackenzie can claim the qualified business income deduction on Mac561's business income. Determine Mackenzie's after-tax cash flow from the entity's business income and any compensation she receives from the business under the following assumptions:

a. Mackenzie conducted Mac561 as a single-member LLC.

b. Mackenzie conducted Mac561 as an S corporation and she received a salary of $100,000. All business income allocated to her is also distributed to her.

c. Mackenzie conducted Mac561 as an S corporation and she received a salary of $20,000. All business income allocated to her is also distributed to her.

d. Which entity/compensation combination generated the most after-tax cash flow for Mackenzie? Single member LLC