Consider the statements:
- $\text{A} \Leftrightarrow \text{A} \vee \sim \text{A}$
- $\text{A} \Leftrightarrow \text{A} \vee \text{A}$
- $\text{A} \vee \text{B} \Rightarrow \text{A}$
- $\text{A} \Rightarrow \text{A} \vee \text{B}$
Which of the above refers to tautologies?
- $\text{III}$
- $\text{I}$ and $\text{II}$
- $\text{II}$ and $\text{IV}$
- $\text{I}$