Step 1: Understanding the Concept:
Crop yield refers to the mass of harvested crop produce per unit area.
Vast differences exist in biological fresh weight yield between cash crops like sugarcane and grain/pulse crops.
Step 2: Detailed Explanation:
Let us estimate and compare standard yield values in India under typical agricultural practices:
1. Sugarcane (D): Yield is extremely high because the harvested economic part is the succulent stalk. Typical yields range from $70,000 \text{ to } 80,000 \text{ kg/ha}$. This is the highest.
2. Rice (C): A high-yielding grain crop, with typical national yields around $2,500 \text{ to } 4,000 \text{ kg/ha}$.
3. Sorghum (A): A hardy dryland cereal crop, yielding around $1,000 \text{ to } 1,500 \text{ kg/ha}$.
4. Soyabean (B): An oilseed crop with average yields around $1,000 \text{ to } 1,200 \text{ kg/ha}$.
5. Urdbean (E): Pulse crops have low yield averages, typically around $500 \text{ to } 700 \text{ kg/ha}$.
Thus, the descending order of average crop yields is Sugarcane (D) $>$ Rice (C) $>$ Sorghum (A) $>$ Soyabean (B) $>$ Urdbean (E).
Step 3: Final Answer:
The descending sequence is D, C, A, B, E, which matches Option (A).