Intro/Pre-Lab Q8 Homework. Unanswered You have a rock (A) with a volume of 15cm and a mass of 45 g. You have another rock (B) with a volume of 30cm and a mass of 60 g. Which rock is more dense? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a RockA is more dense than Rock B. b Rock B is more dense than Rock A. None of these d Both are equally dense Unanswered 3 attempts left Submit