What is the expected laboratory data for a patient suffering from pernicious anemia?

The expected laboratory data for a patient suffering from pernicious anemia typically includes a significant decrease in red blood cell (RBC) count, accompanied by a possible decrease in platelet (PLT) count, and the white blood cell (WBC) count can vary but is often within lower normal limits or may also be reduced. In this case, the option you've selected reflects a severely low RBC count, which is characteristic of pernicious anemia due to vitamin B12 deficiency. This condition results in ineffective erythropoiesis, leading to macrocytic anemia where the RBC count is significantly below normal levels.

The white blood cell count in pernicious anemia can be normal or slightly decreased, while the platelet count may also be low due to the bone marrow's impaired function or peripheral destruction. Therefore, the values in the selected option point to a severe anemia state consistent with the expected laboratory findings in a patient with pernicious anemia.

In summary, the low RBC count of 2.5 x 10^12/L signifies significant anemia, WBC count suggestive of leukopenia is typical, and the extremely low platelet count supports the hematological abnormalities seen in this type of anemia.