To answer this question, the user needs to have knowledge about ResultSets and their characteristics.
Option A is incorrect because there is no openCursor() method in the ResultSet class.
Option B is partially correct. The ResultSet object is updateable only if you indicate a concurrency strategy when executing the statement, and the driver supports updateable ResultSets.
Option C is incorrect because there is no class called UpdateableResultSet in the Java API.
Option D is incorrect because ResultSets can be updateable, but it depends on the driver, the type of ResultSet, and the concurrency strategy used.