What are the major differences between vitamin B₁₂ deficiency, vitamin B₆ deficiency, and iron deficiency?
a) Vitamin B₁₂ deficiency primarily affects neurological functions, while vitamin B₆ deficiency primarily affects dermatological health.
b) Vitamin B₆ deficiency often leads to symptoms like fatigue and anemia, while iron deficiency mainly affects neurological functions.
c) Vitamin B₁₂ deficiency can cause neurological symptoms and anemia, whereas vitamin B₆ deficiency primarily affects neurological and cognitive functions.
d) Iron deficiency primarily affects dermatological health, while vitamin B₁₂ and B₆ deficiencies mainly manifest in neurological symptoms.