i will put answers later

2. A. 13 - 21
B. 14 - 21
C. 15 - 21
D. 21 - 22

3. A. 5th finger P1 hypoplasia
B. 4th finger P2 hypoplasia
C. 5th finger P2 hypoplasia
D. 4th finger P1 hypoplasia

4. A. C1 – C2 Subluxation
B. C2 – C3 Subluxation
C. C2 – C3 Spondylolisthesis
D. C2 – C3 Spondylolysis

6. A. Maternal serum AFP
B. Beta HCG
C. PAPP-A
D. Inhibin A

7. A. Abruption
B. Limb deformities
C. Accidental intestinal perforation
D. Chorioamnionitis

8. A. 100%
B. 50%
C. 25%
D. 0%

9. A. <3mm
B. <4mm
C. <5mm
D. <6mm

10. A. Single Umbilical Artery
B. Choroid plexus cyst
C. Diaphragmatic hernia
D. Duodenal atresia

11. A. Down syndrome
B. Edward syndrome
C. Turner syndrome
D. Klinefelter syndrome