Which of the following sentences properly uses a semicolon to join two independent clauses?

Elvis Presley was known as the King of Rock & Roll; he was also known for his; generosity and kindness.
Elvis Presley was known as; the King of Rock & Roll, he was also known for his generosity and kindness.
Elvis Presley was known as the King of Rock & Roll. He was also known for his; generosity and kindness.
Elvis Presley was known as the King of Rock & Roll; he was also known for his generosity and kindness.

Elvis Presley was known as the King of Rock & Roll; he was also known for his generosity and kindness.