Ny Occasions: Use apostrophes for plurals of abbreviations which have funds letters and intervals: M.D.’s, C.P.A.’s. Also use apostrophes for plurals formed from single letters: He been given A’s and B’s on his report card. Head your p’s and q’s. There does not seem to be any consensus on this https://hubwebsites.com/story21359297/trusted-car-sales-uk-an-overview