What are the two main features of symptoms due to A-B lipoproteinemia?

The symptoms associated with A-B lipoproteinemia are primarily related to lipid metabolism disruptions, impacting the absorption and transport of lipids in the body, particularly in relation to fat-soluble vitamins and essential fatty acids. Muscle weakness is a prominent feature because the condition can deprive muscles of the energy they derive from lipids, leading to reduced muscle performance and overall weakness. Diarrhea is also relevant as the inability to absorb fats can upset normal gastrointestinal function, resulting in steatorrhea (excess fat in stool) and diarrhea.

These symptoms reflect the physiological consequences of impaired lipid transport and metabolism, aligning with characteristic difficulties individuals with A-B lipoproteinemia experience. Other symptom sets from the other choices generally involve different physiological pathways and conditions that are not as directly related to the specific disruptions seen in A-B lipoproteinemia.