Explanation/Reference:
A: The OMG RAS specification is a set of guidelines and recommendations about the structure, content, and descriptions of reusable software assets. It identifies some categories, or rather types or profiles and provides general guidelines on these profiles. RAS addresses the engineering elements of reuse. It attempts to reduce the friction associated with reuse transactions through consistent, standard packaging.
Incorrect answers:
B: MOF is an extensible model-driven integration framework for defining, manipulating, and integrating metadata and data in a platform independent manner. MOF-based standards are used for integrating tools, applications and data.
C: XMI is a model-driven XML Integration framework for defining, interchanging, manipulating and integrating XML data and objects. XMI-based standards are used for integrating tools, repositories, applications and data warehouses. XMI provides rules by which a schema can be generated for any valid XMI-transmissible Meta Object Facility-based meta-model.
D: The SysML specification defines a general-purpose modeling language for systems engineering applications. SysML supports the specification, analysis, design, and verification and validation of a broad range of complex systems. These systems may include hardware, software, information, processes, personnel, and facilities.
Reference: Oracle Reference Architecture, Software Engineering, Release 3.0