help please

a [MUST SHOW WORK) Julia is a certified business lawyer earning $60,000 a year. She wants to start her own law firm. Her boss offers her a $10,000-a-year raise not to quit. Julia still insists on leaving, so her boss offers an additional $15,000-a-year raise. Julia's yearly implicit costs of running her own buisness are at least Select one: A. $25,000. B. $10,000. C. $15,000. D. $60,000 E. $85,000