i need the answer ASAP

Which of the following statements are equivalent to the statement, "There exists either a computer engineer or a mathematician who knows both Calculus and Python. Select one or more: 7 A. There exists a person who is a computer engineer or a mathematician who knows both calculus and python. B. There exists a person who is a computer engineer and who knows both calculus and Python or there exists a mathematician who knows both Calculus and Python C. There exists a person who is a computer engineer and who knows both calculus and Python or there exists a person who is a mathematician and who knows both Calculus and Python D. There exists a person who is a computer engineer or there exists a person who is a mathematician who knows Calculus or who knows Python