<prompt> Which of the following sonographic finding confirms intra uterine pregnancyAn echogenic rim along one side of decidua.Two concentric echogenic rings surrounding the sac.A sac positioned eccentrically within endometrium.All of the above.  <response>: Normal gestational sac implants eccentrically in the endometrium.Anechoic center surrounded by single echogenic rim intra-decidual sign.Two concentric rings echogenic surrounding sac Double decidual sign. 