Final answer:
The correct option is b. Iron status is probably normal, which is not true given the indicated hemoglobin levels suggest iron deficiency anemia. The PCV is within the lower normal range, and without MCV, vitamin B12 or folate deficiencies cannot be confirmed.
Step-by-step explanation:
The question concerns a pregnant lady with hematological values given as hemoglobin (Hb) concentration of 9 g/dL, packed cell volume (PCV) of 36%, and red blood cell (RBC) count of 3 x 106 cells/mm2. Analyzing these values, option b. Iron status is probably normal is not true, because the hemoglobin levels are indicative of iron deficiency anemia, which typically presents with Hb levels of 5 to 9 g/100 ml. Given this Hb level and low RBC count, the pregnant lady likely has anemia. The PCV, also known as hematocrit, is just within the lower normal range for females, hence option c is incorrect; volume of RBCs is not above normal. Deficiencies in vitamin B12 or folate could both contribute to anemia, often manifesting as megaloblastic anemia with larger-than-normal RBCs (macrocytic), so without additional information about mean corpuscular volume (MCV), we cannot confirm if options d and e are true or not. However, the given RBC count is low and if MCV is normal, it may imply that mean corpuscular hemoglobin (option a) can be normal.