When Dealing with a Customer, You Should Not_. Choose only one.

Thanks for invitation

I think answer is A

I leave the answer to the experts, specialists in this field

I believe  the answer is D. All of the above. While dealing with customer we can't say any negative word to the customer.  

D. All of the above , especially if the customer is upset .

all the above option " D "             .

C. Give out orders or place blame on the Customer.

Option D- All of the Above.

Mostly it is to do with D, that is correct

D. All of the above . The rule is : The customer always right

We are here to serve our customer. So the answer is D.