Which sign is seen on USG when the femoral vein meets the GSV and femoral artery at the saphenofemoral junction?

Which sign is seen on USG when the femoral vein meets the GSV and femoral artery at the saphenofemoral junction?*

a. Tillaux sign

b. Stemmers sign

c. Mickey mouse sign

d. String sign

ans:c

Pulmonary plethora is seen in*

a. TAPVC

b. TOF

c. Right heart failure

d. Ebstein anomaly

ans:d

What’s the use of asking such questions in a pg exam 🤔? Why can’t they test the basic knowledge. ? If we would know so much before there is no need of puttinh us through a 3 year grind