What is your question about my point (a)? Saints live in the flesh on planet Earth (the Bible calls all believers in Christ, saints) as well as in heaven.
Acts 9:13, Acts 9:32, Acts 9:40 - 41, Acts 26:10, Romans 1:7, Romans 8:26 - 27, Romans 12:10 - 16, Romans 15:25 - 26, Romans 15:30 - 31, Romans 16:15, 1 Corinthians 1:2, 1 Corinthians 6:1, 1 Corinthians 14:33, 1 Corinthians 16:1, 1 Corinthians 16:13 - 16, 2 Corinthians 1:1, Ephesians 1:1, Ephesians 4:11 - 12, Ephesians 5:3, Philippians 1:1, Philippians 4:20 - 23, Colossians 1:2, 1 Timothy 5:9 - 10, Hebrews 6:9 - 10, Jude 1:3.
All of those verses show that all children of God are called “saints”.
The question is; what exactly does this mean? Scripture doesn't tell us what? Alive in the flesh? Can you rework your thought into something coherent?