Which coagulation factor is affected in hereditary combined factor deficiency, a rare bleeding disorder?

A Factor X and factor V
B Factor II and factor VII ✓
C Factor IX and factor XI
D Factor I and factor XIII

Explanation

Hereditary combined factor deficiency is a rare bleeding disorder characterized by a deficiency of both factor II (prothrombin) and factor VII.

Source

Orphanet Journal of Rare Diseases
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Hard MEDICAL Confidence: medium