Option A is the correct answer. 

A noun is the name of a person, place, animal, or thing. There are six categories of nouns: proper, common, collective, abstract, countable, and uncountable. The specific name of a person, place, animal, or thing is classified as a proper noun. In this case, "King Solomon" is a proper noun because it uniquely identifies a person by name.

While analyzing the word "King" in this context, it is also important to consider its use as an abstract noun for king. An abstract noun for king refers to intangible qualities associated with kingship, such as wisdom, authority, or leadership. In this sentence, King Solomon's wisdom can also be considered an abstract noun for king, emphasizing the intangible traits linked to the role of a monarch.

To summarize, "King Solomon" represents a proper noun as it refers to a specific individual. Additionally, the qualities attributed to him, like wisdom, could be identified as an abstract noun for king, focusing on the intangible characteristics related to his title.