Answer:
The answer is: B) Charles is starting from almost scratch developing a prospect and customer base and may lose some current customers because he does not know about them.
Step-by-step explanation:
Obviously Charles doesn't know the customers the old sales representative had and three weeks may not be enough time for Charles to get to know them and gather enough information about them either.
So basically, Charles is starting from scratch and needs to develop his own customer database. Doing so will consume time and effort, and possibly Charles will lose some sales because of this. Eventually he will need to catch up and probably match and even exceed the previous salesman's sales records.