<prompt> T-sign is seen inDiamniotic MonochorionicDichorionic DiamnioticMonochorionic monoamnioticDichorionic Monoamniotic  <response>: The T sign and Twin-peak signor lambda lsign and is used in ultrasound assessment of multifetal pregnancy. T sign refers to the thin intervening septa denoting a Monochorionic pregnancy. Twin peak signLambda sign denotes Dichorionic Diamniotic Twin Gestation 