Pavel Sergeyevich Alexandrov (Russian: Па́вел Серге́евич Алекса́ндров ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.
Pavel Sergeyevich Alexandrov wrote in Russian.
Pavel Sergeyevich Alexandrov (Russian: Па́вел Серге́евич Алекса́ндров ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.

Based on that paragraph can we conclude that this sentence is true?
Pavel Sergeyevich Alexandrov wrote in Russian.

Options: 

 - yes

 - it is not possible to tell

 - no
it is not possible to tell
Pavel Sergeyevich Alexandrov (Russian: Па́вел Серге́евич Алекса́ндров ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.

Based on that paragraph can we conclude that this sentence is true?
Pavel Sergeyevich Alexandrov wrote in Russian.

Options: 

 - yes

 - it is not possible to tell

 - no
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