What does the kenning "hell-forged hands" in line 64 suggest about Grendel?

"Of the Danes, sorrow heaped at his door

By hell-forged hands."

Group of answer choices

Grendel killed the devil with his bare hands.

Grendel's mother is the devil and made him.

Grendel is fighting against the evil and wicked ways of man.

Grendel is a creature from hell and is pure evil.