What are some features of ABAP SQL?

Comprehensive and Detailed Explanation From Exact Extract:

ABAP SQL (also known as Open SQL):

Is fully integrated in the ABAP language and supports embedded use with host variables, making Option B correct.

Is first processed by the ABAP Database Interface, which translates Open SQL into the database-specific native SQL. Hence, Option A is also correct.

Option C is incorrect because ABAP SQL is not directly executed on HANA or any database; it is interpreted and adapted by the ABAP layer.

Option D is incorrect because ABAP SQL is not restricted to HANA; it is database-agnostic and works across different supported DBs.