User blog:Mikel6718/Anybody Care to Explain the Disturbing Ending of Egg Monsters from Mars?

So I've read Egg Monsters From Mars 'bout a year ago, and I'm still trying to analyze the ending. I took this book to my secondary English teacher and he said the ending could mean different things:

1- When the monsters formed a blanket around Dana they laid an egg inside him

2- When the monsters formed a blanket around Dana they somehow...impregnated him

3- When the monsters fromed a blanket around Dana they caused him to mutate and...welll...lay that egg

4- THIS ONE IS PRETTY DISTURBING: Since Dana is a name used for both genders, the ending could imply that Dana is in fact a transgender and might still have the hormones and cells needed to produce an offspring, and was...err...fertilized by the egg monsters when they formed a blanket around him/her?

5- Dr. Gray probably did something to him while he was asleep, causing him to lay that egg

6- He was originally an egg monster or something that took the form of a human after Dr. Gray tested on him, makes sense, since we've got books like MY HAIRIEST ADVENTURE when a dog takes human form, this could be similar.

7- This isn't Earth? What if this is like WELCOME TO CAMP NIGHTMARE and the characters are on some other planet where males lay eggs?

PLEASE HELP EXPLAIN THIS ENDING!!!