In infants displaying abnormal work of breathing, retractions observed with the indrawing of skin between the ribs are known as:

Rationale: A. Intercostal retractions occur when the skin between the ribs is pulled inward during inspiration, indicating increased work of breathing and possible respiratory distress. B. Subcostal retractions are seen when the skin just below the ribcage is drawn inward. C. Substernal retractions involve inward movement below the sternum. D. Supraclavicular retractions involve inward movement above the clavicles, often indicating severe respiratory distress.