HELP People keep stealing my points. Please don’t answer if I don’t know it’s not fair. it’s only 2 questions and will make u brainlist

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space