Which is the converse of: If an integer is divisible by 20, then it is divisible by 10?
If it is divisible by 10, then it is divisible by 20.
If it is not divisible by 20, then it is divisible by 10.
If it is not divisible by 10, then it is not divisible by 20.
If it is divisible by 20, then it is divisible by 10.