Which Is the Best Counterexample to the Principle in the Following

Which is the best counterexample to the principle in the following Argument from Principle?
[Pay attention to the criteria for good counterexamples from Chapter 6 of Doing Practical Ethics.]
1) If someone does not have a desire to keep living, then killing them is not wrong.
2) A first-trimester fetus does not have a desire to keep living [because it doesn't have any desires at all].
So, killing a first-trimester fetus is not wrong.

A) Suppose there is a depressed teenager who, despite the misery they feel, wants to keep on living. They have a desire not to be killed, and killing them is wrong.
B) A newborn infant wants a lot of things, but it doesn't want to keep living. Wanting that takes an awareness that you're an existing individual and that your existence could end. That's way beyond the abilities of an infant. So, a human infant does not have a desire to keep living. Nevertheless, it's still wrong to kill an infant.
C) How do we know a first-trimester fetus does not want not to be killed? Do you have evidence about what's in their mind?
D) A person who seeks out assisted-suicide wants to be killed, and it's not wrong to for them to kill themselves.