You are given three different substances that are known mutagens. Using a variety of techniques, you analyze the results of exposure to these substances. Your findings are shown in the table at right. Using this information, link each of the three substances with one of the following molecular properties and explain your choices:

i. a molecule that can insert itself between a purine and a pyrimidine in an intact DNA strand 

ii. a molecule similar in structure to thymine but capable of forming a hydrogen bond with guanine 

iii. a molecule that converts cytosine to a form that can base-pair with adenine.