<prompt> Prologed PT and Normal PTT may be seen in ?ThrombocytopeniaDICVit. K deficiencyNone  <response>: Ans. is None o Option a and d are defects of platelets -- Bleeding time is prolonged, PT and PTT are normal. o DIC causes deficiency of all factors and vitamin k deficiency causes deficiency of factor II, VII, IX, X cause prolongation of both PT and PTT. 