<prompt> A 9 year old boy with elevation in both PT and A PTT. What is the diagnosis?Defect in extrinsic pathwayDefect in intrinsic pathwayPlatelet function defectDefect in common pathway  <response>: Ans. is d i.e., Defect in common pathway Defective coagulation pathway PT AM Extrinsic Increased Normal Intrinsic Normal Increased Common Increased Increased 