When errors have been made while delivering a service such that some aspect of the service must be performed again, the resultant cost is called a$($n$)$:

A$.$ warranty.

B$.$ scrap cost.

C$.$ rectification cost.

D$.$ external failure cost.When errors have been made while delivering a service such that some aspect of the service must be performed again, the resultant cost is called a$($n$)$:

A$.$ warranty.

B$.$ scrap cost.

C$.$ rectification cost.

D$.$ external failure cost.