Tyrell Has a Tax Service and Accounting Business in Redwood

Tyrell has a tax service and accounting business in Redwood City.He decides to move to Center City,which is 150 miles away and sells his accounting practice to Able and Baker,a CPA firm.In the sales contract,he agrees that he will refrain from practicing accounting anywhere within a 20-mile radius of Redwood City for a period of two years.However,on weekends he returns to his house in Redwood City,and when clients call him,he meets with them in his home.The sales agreement:

A) is being violated by Tyrell.
B) is invalid,because it is an illegal restraint of trade.
C) is illegal,because it is a violation of public policy.
D) will be divided into an enforceable,valid portion and an unenforceable,invalid portion,which is the time provision,because the two-year period is too long.