In 1906, Pierre died in a tragic accident. He was hit by a horse-drawn carriage while he was crossing the street. Marie was devastated by her husband's death and threw herself into her work. She inherited Pierre's professorship at the Sorbonne, becoming the university's first female professor. She continued her research into two new radioactive elements, polonium (named for her native Poland) and radium (from the Latin word for "ray'). In 1911, Marie Curie earned a second Nobel Prize, this time in chemistry. She was the first person to win two Nobel Prizes. She is still the only person who has won the Nobel in two different sciences. Which of these best describes Marie's state after her husband died? А She grieved for some time but eventually remarried. B She was extremely sad but also hard working and productive. C She was so upset that she could not continue with her research. D She was relieved that he died so that she could take his professor job.​