Equality - Rust

struct Data(u32);

fn main() {

let ab = "ab".to_string();
let c = "c";
let equality = [

// Which of the following are true / false?
"abc" == "abc",
"abc" == "ab".to_string() + "c",
"abc" == ab + c,
123 == 123,
Data(123) == Data(123),

];

for equal in equality.iter() {
    println!("{equal}");
}

}