What is the case that 1 Corinthians 15:7 refers to James the Just, relative of Jesus, rather than James, one of the Twelve?

The following verses refer to "James," and most commentators identify him as the same James who is referred to as the "brother" of Jesus (though the exact meaning of that word is unclear). How do we know that it refers to him, rather than the son of Zebedee or of Alphaeus , two of the Twelve Apostles? 1 Corinthians 15:3-8 >For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures, and that he appeared to Cephas, then to the twelve. >Then he appeared to more than five hundred brothers at one time, most of whom are still alive, though some have fallen asleep. Then he appeared to **James**, then to all the apostles. >Last of all, as to one untimely born, he appeared also to me.