Consider $F=\{ f: \mathbb{C} \to \mathbb{C}| f$ is an entire function,$ |f'(z)| \leq |f(z)|$ for all $z \in \mathbb{C}\}.$
Then which of the following is true?
1) $F$ is a finite set.
2) $F$ is an infinite set.
3) $F=\{ \beta e^{\alpha z}: \beta \in \mathbb{C}, \alpha \in \mathbb{C}\}$
4) $F=\{ \beta e^{\alpha z}: \beta \in \mathbb{C}, |\alpha| \leq 1\}$
1) is false and 2) is true as functions in option 4) satisfy above propetry.
Also 3) is false as for $\alpha=2 $ and $\beta =1$ the property does not hold true.
Is 4) true?