Statement A is correct; Christina Koch completed a single spaceflight of 328 days from March 2019 to February 2020, which set a record for the longest spaceflight by a woman. Statement B is correct; astronauts Luca Parmitano (ESA) and Alexander Skvortsov (Roscosmos) were indeed part of the International Space Station (ISS) crew during parts of her extended stay, notably during Expedition 60 and