Read the text and answer the question. "Marie Curie was a brilliant scientist. She was born in Warsaw, Poland, on November 7, 1867. In 1891, she moved to Paris to study at the Sorbonne. She met Pierre Curie in 1894, and they got married in 1895. Together, they discovered polonium and radium in 1898. Marie Curie won her first Nobel Prize in Physics in 1903 and her second Nobel Prize in Chemistry in 1911. She passed away on July 4, 1934." When did Marie Curie discover polonium and radium?
A) 1867