Step 1: Understanding the Concept:
Developing disease-tolerant, high-yielding hybrids is a major goal in coconut breeding.
The ICAR-Central Plantation Crops Research Institute (CPCRI) has released several location-specific coconut hybrids.
Step 2: Detailed Explanation:
Let us evaluate each statement regarding the coconut hybrid 'Kalpa Sankara':
- Statement (A) is correct: 'Kalpa Sankara' is a prominent coconut hybrid developed by crossing Chowghat Green Dwarf (CGD) $\times$ West Coast Tall (WCT).
- Statement (B) is incorrect: Since it is a CGD $\times$ WCT cross, the statement claiming it is a Malayan Yellow Dwarf (MYD) $\times$ WCT cross is false.
- Statement (C) is correct: It is a high-yielding hybrid, producing around 84 nuts per palm per year under disease-affected conditions, outperforming local selections.
- Statement (D) is correct: 'Kalpa Sankara' was specifically bred for and released in the root (wilt) disease-prevalent tracts of Kerala, showing high tolerance to the phytoplasma-induced root (wilt) disease.
Therefore, the correct statements are (A), (C), and (D) only, matching Option (A).
Step 3: Final Answer:
The correct statements about the Kalpa Sankara hybrid are (A), (C) and (D) only.