What is output by the following Java code segment?

```
if (temp > 90) {
System.out.println("This porridge is too hot.");
}
if (temp < 70) {
System.out.println("This porridge is too cold.");
}
if (temp == 80) {
System.out.println("This porridge is just right!");
}
```

a. This porridge is too hot.
b. This porridge is too cold.
c. This porridge is just right!
d. None of the above.

a. This porridge is too hot.