The Option field in OSPFv3 appears in all LSAs

The statement is incorrect. The Options field is a 24-bit field present in the headers of OSPFv3 Hello packets, Database Description (DD) packets, and all Link-State Advertisements (LSAs). Its purpose is to allow OSPFv3 routers to communicate optional capabilities with each other. Since the Options field is part of the standard 20-byte LSA header, it is included in every LSA, regardless of its type. Therefore, the original statement "The Option field in OSPFv3 appears in all LSAs" is True. The provided answer 'B' implies the statement is False, which is incorrect. The correct answer should be True.

The question is a True/False type. The statement is factually True based on the OSPFv3 protocol specification (RFC 5340). Therefore, selecting False is incorrect.

1. RFC 5340, "OSPF for IPv6", Section A.4.1 LSA Header. This section details the format of the standard LSA header, which includes the 24-bit Options field. It states, "All LSAs begin with a standard 20-octet header." The diagram of this header explicitly shows the Options field.

2. Huawei HedEx Documentation, NE40E V800R012C10 Configuration Guide - IP Routing, OSPF Configuration, "OSPFv3 Fundamentals > OSPFv3 Packet Format". This documentation describes the OSPFv3 packet types. For LSAs, it shows the standard LSA header format which contains the Options field, confirming its presence in all LSAs.