To solve this question, we need to understand the concept of an income-consumption curve and how it relates to normal and inferior goods.

The Income-Consumption Curve (ICC) shows the combination of goods that a consumer would buy when their income changes, with prices held constant. The shape of the ICC can help identify whether a good is normal or inferior:

• Normal Goods: As income increases, the consumption of normal goods increases. Therefore, on an ICC graph, a normal good would show a positive slope (outward from the origin).
• Inferior Goods: As income increases, the consumption of inferior goods decreases. Thus, on an ICC graph, an inferior good may have a negatively sloping curve (backward bending curve).

In the given diagram, the ICC curve starts upward and then bends back, indicating that as income increases, the consumption of Good A decreases at some point, showing the characteristic of an inferior good.

Conclusion: Based on the shape of the ICC, only Good A becomes an inferior good at higher levels of income. Thus, the correct answer is: Only (A) is an inferior good.