To which of the following rules does this example apply?

Last updated: 8/5/2022

To which of the following rules does this example apply? There were about 500 guests at Richard and Roselle's wedding party. If there are two or more possessors of a certain object, then the apostrophe is put at the end of the last noun. O If the possessive case is a singular noun or an indefinite noun, then the apostrophe is put at the end of the noun along with an "s." O If the possessive case is a plural noun that end in s, then the apostrophe is put at the end of the plural noun after the final "s."