Which Is the Best Standard-Form Representation of the Following Argument

Which is the best standard-form representation of the following Argument from Principle?
A fetus potentially has a right to life. (If allowed to develop, it will become a child, and children definitely have a right to life.) If someone potentially has a right, then we should treat them as though they already do have that right. For this reason, we should treat fetuses as if they have the same right to life that children have.

A) 1) Children have a right to life.
2) Fetuses have a right to life.
Therefore, we should treat fetuses the same way we treat children.
B) 1) If someone potentially has a right, then we should treat them as though they already do have that right.
2) A fetus potentially has a right to life.
Therefore, we should treat fetuses as if they already have a right to life.
C) 1) If we should treat something as if it has a right to life, then it actually does have a right to life.
2) We should treat fetuses as if they have a right to life.
Therefore, fetuses have a right to life.
D) 1) A fetus will eventually turn into a child.
2) A child has a right life.
Therefore, we should treat fetuses as if they already have a right to life.