Which word and punctuation mark corrects the punctuation error in this sentence?

A boy like Roy, who has good manners is welcome everywhere.

A. Roy:

B. welcome,

C. manners,

C - manners.

A boy like Roy, who has good manners, is welcome everywhere.

You can also replace the commas with dashes or brackets, they have the same effect but the different type of punctuation will make you a higher level.

A boy like Roy (who has good manners) is welcome everywhere.

A boy like Roy - who has good manners - is welcome everywhere.