The following sentence has been divided into parts. One of them may contain an error.
Select the part that contains the error from the given options. If you don't find any error, mark 'No error' as your answer.

A celestial body or astronomical object is / a naturally occurring physical thing, association, / or configuration that happens in the visible universe.

A

No error

B

A celestial body or astronomical object is

C

or configuration that happens in the visible universe

D

a naturally occurring physical thing, association