a test

[Gość: student]

Which of the answers for text test below is correct? Is it c or d?

In 1809 the German philosopher Georg Wilhelm Friedrich Hegel (1770-1831)
received a letter from the Netherlands. At the time he had taken over as principal
of the Grammar School (Gymnasium) in Nuremberg, while waiting for a
professorship at a university. Before that time he had been a private tutor in Jena,
and the Dutchman Pieter van Ghert had been one of his students.
a. G. W. F. Hegel was offered a professorship in Nuremberg in 1809.
b. The German philosopher Hegel taught the Dutchman Pieter van Ghert
when he was principal of a Grammar School.
c. Hegel was expecting a professorship in Nuremberg or Jena when he
received a letter from the Netherlands.
d. After Hegel, the German philosopher, had been a private tutor in Jena, he
became the principal of a Grammar School.

[etbl]

Indeed, it is "d".