Identify whether the following is a simple sentence or a compound sentence. the boy had to catch the nine o'clock train. simple sentence compound sentence

Which sentence is written correctly? mrs. ellis, a petite woman, wore the finest dresses from paris. mrs. ellis a petite woman, wore the finest dresses from paris. mrs. ellis, a petite woman wore the finest dresses from paris. mrs. ellis a petite woman wore the finest dresses from paris.