Using an excel formula to search if all cells in a range read "True", if not, then show "False"

For example:

```
A      B     C     D
True  True  True   True
True  True  FALSE  True

```

I want a formula to read this range and show that in row 2, the was a "False" and since there are no falses in row 1 I want it to show "true."

Can anyone help me with this?