HELP IMMEDIATELY

Simplify. Express the answers using positive exponents

1) -2a²b⁴÷4ab⁻⁸, a≠0, b≠0

A) -1/2ab¹²

B) -1/2ab⁻¹²

C) -a/2b⁴

D) -a/2b⁻⁴

2) -5w⁴y⁻²÷-15w⁻⁶y², w≠0, y≠0

A) 1/3w⁻²

B) 1/3y⁴w²

C) w¹⁰/3y⁴

D) w²/3y⁴