For Each of the Communications Listed Below, Select the Appropriate

For each of the communications listed below, select the appropriate time period during which the communication is typically obtained or provided and whether the communication is oral, written, or either oral or written. Engagement letter

A) Prior to or at the date of the auditors' report, Written
B) Following the date of the auditors' report; Either oral or written
C) Prior to the engagement, Written
D) Either following the date of the auditors' report or as significant matters are identified, Written