Explain simply why Ian Michael Nelson is the correct answer to: Passage: Ian Michael Nelson (born 10 April, 1995) is an American actor who portrayed a young Derek Hale in the television series Teen Wolf and Eric Palmer in the drama film The Judge.

Question: Based on this passage, who played young derek hale in season 4?. Explanation:
To answer the above question, the relevant sentence is: Ian Michael Nelson (born 10 April, 1995) is an American actor who portrayed a young Derek Hale in the television series Teen Wolf and Eric Palmer in the drama film The Judge.