Oehlers, CPA, is a staff auditor participating in the engagement of Capital Trust, Inc. Which of the following circumstances impairs Oehlers independence?
A) Oehlers sister is an internal auditor employed part-time by Capital Trust.
B) Oehlers friend, and employee of another local accounting firm, prepares the tax return of Capital Trust's CEO.
C) Oehlers and Capital Trust's 401K plan own stock with the same corporation.
D) During the period of professional engagement, Capital Trust gave Oehlers tickets to a football game worth $75.