What is the best way to punctuate the bolded portion of the sentence?

In a letter about The Lion, The Witch, and The Wardrobe, Lewis wrote, “Let us suppose that there were a land like Narnia

land like Narnia.”

land like Narnia”.

land like Narnia”

land like Narnia

land like Narnia."

The best way to punctuate the bolded portion of the sentence would be: "land like Narnia."