Chief cells
Parietal cells
Goblet cells
Mucous cells
Erythropoiesis is a process of production of red blood cells. The parietal cells of the stomach are gastric cells that indirectly help in erythropoiesis. These cells produce glycoprotein known as a gastric intrinsic factor (GIF). This factor plays an important role in the absorption of vitamin B12 in the ileum of the small intestine. This vitamin B12, in turn, is essential in the process of erythropoiesis for differentiation of erythroblasts. Thus, the correct answer is option B (Parietal cells).