During$$ Comcast's "onboarding" phase with$$ customers, communication platforms like email and SMS were used to send messages. What was the$$ result?

A$.$

$$Customers$\text{'}$ ratings of satisfaction with their service climbed significantly.

B$.$

$$Customers$\text{'}$ ratings of satisfaction with their service climbed only for emails sent from some specific agents and declines for emails sent from other agents.

C$.$

$$Customers$\text{'}$ ratings of satisfaction with their service declined gradually.

D$.$

$$Customers$\text{'}$ ratings of satisfaction with their service declined for most of their products.

E$.$

$$Customers$\text{'}$ ratings of satisfaction with their service differed among products.