I want to evaluate to see of some condition is true and if so then output a message. If not then output another message. What would I write?

if true; then

echo $"$it is true"

fi

if true; then

echo $"$it is true"

fi

if true; then

echo $"$it is true"

fi

if true; then

echo $"$it is true"

else

echo $"$it is false"

fi

none of the above.