Explanation:

Urbanization in India, consistent with global demographic trends, has generally led to a decrease in both the birth rate and death rate (A). Improved healthcare, education, and access to family planning in urban areas contribute to lower mortality and fertility. Option (B) is partially true but incomplete. Options (C) and (D) are generally not observed long-term effects of urbanization on these demographic indicators. Hence, (A) is the most accurate description.