For your research project, your group is planning to treat embryos with melatonin at a concentration of 1uM for several days. You have a stock solution of 5mM melatonin in DMSO to work with. If you wanted to treat some embryos with melatonin in a total volume of 10ml, which of the following is the best way to make up 9ml of solution to which you could add 1ml of embryo water containing the embryos? Add 1ml of melatonin stock solution to 99ml of embryo water, then add 0.5ml of the diluted melatonin to 8.5ml of water. Add 1ml of melatonin stock solution to 99ml of embryo water, then add 200 ul of the diluted melatonin to 9.8ml of water. Add 1ml of melatonin stock solution to 99ml of embryo water, then add 2ml of the diluted melatonin to 7 ml of water. Add 1ml of melatonin stock solution to 99ml of embryo water, then add 0.5ml of the diluted melatonin to 9.5ml of water. Add 1ml of melatonin stock solution to 99ml of embryo water, then add 200 ul of the diluted melatonin to 8.8ml of water