What do you guys think? I would LOVE your help!

CC
We are having fraternal twins and found out that one is a boy (12 week blood test). I would love to see what you guys think about baby b's (the lower one) gender. I think the bottom pic has shows the cord (according to ultrasound tech), but she  wouldn't say what she thought the gender was. What do you think or see? I know the 3 lines are suppose to mean girl, but not sure if these are them.