The purpose of a goodwill letter is: a. to explain to the client the attorney's basis for altering the terms of a fee agreement b. to give the client information contained in the attorney's resume, to boost the client's confidence in his/her legal representation c. to provide the client with a courtesy extension of time to pay an overdue legal bill d. to alleviate the client's potential concerns that nothing is happpening in his/her case when a bill shows little activity