A function performs 4n² + 20n + 300 modeled operations. What is its tight asymptotic time…

A function performs 4n² + 20n + 300 modeled operations. What is its tight asymptotic time bound?

1. Θ(1)
2. Θ(n)
3. Θ(n²)
4. Θ(4n² + 20n + 300) only