As per 1991 Census, which one of the following groups of Union Territories had the highest literacy rate?

1. The question asks which group of Union Territories (UTs) had the highest literacy rate according to the 1991 Census. 2. According to the 1991 Census data for UTs: - Chandigarh: ~77.8% - Dadra & Nagar Haveli: ~40.7% - Delhi: ~75.3% - Andaman & Nicobar Islands: ~73.0% - Pondicherry (Puducherry): ~74.7% - Lakshadweep: ~81.8% (Not in options pairs) - Daman & Diu: ~71.2% (Not in options pairs) 3. Evaluating the options based on these approximate rates: (A) Chandigarh (77.8%) and Dadra & Nagar Haveli (40.7%) - Mix of high and very low. (B) Delhi (75.3%) and Andaman & Nicobar Islands (73.0%) - Both relatively high. (C) Andaman & Nicobar Islands (73.0%) and Pondicherry (74.7%) - Both relatively high. (D) Pondicherry (74.7%) and Delhi (75.3%) - Both relatively high and slightly higher on average than B and C. 4. Comparing the pairs, the pair Pondicherry and Delhi has two UTs with literacy rates around 75%, which is higher than the average of pairs involving Dadra & Nagar Haveli and slightly higher or comparable to the other pairs with two high-literacy UTs. Delhi had a slightly higher rate than Pondicherry, and both were among the top group (excluding Lakshadweep and Chandigarh). Therefore, this pair represents a group with a consistently high literacy rate.