After running this program, if you enter 1000, then what will be the output of the program?

#!/bin/bash
echo "Please enter a number"
read a
if [ $a -lt 100 ]; then
echo "It is less than 100"; 
elif [ $a -lt 1000 ]; then
echo "It is less than 1000"
else 
echo "It is greater than 1000"
fi
exit 0

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