Q:Information: - Bratislava (or also known by ) is the capital of Slovakia, and with a population of about 450,000, the country's largest city. The greater metropolitan area is home to more than 650,000 people. Bratislava is in southwestern Slovakia, occupying both banks of the River Danube and the left bank of the River Morava. Bordering Austria and Hungary, it is the only national capital that borders two sovereign states. - The Slovak Super Liga is the top level football league in Slovakia, currently known as the Fortuna liga due to a sponsorship arrangement. It was formed in 1993 following the dissolution of Czechoslovakia. The record for most titles is eight, held by Slovan Bratislava. The current title holders are AS Trenin. - Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south. Slovakia's territory spans about and is mostly mountainous. The population is over 5 million and comprises mostly ethnic Slovaks. The capital and largest city is Bratislava. The official language is Slovak, a member of the Slavic language family. - Viktor Tegelhoff ( 22 December 1918 -- 9 September 1991 ) was a Slovak football player . He played for club SK Slovan Bratislava . - SK Slovan Bratislava ("Bratislava Slav") is a football club based in Bratislava, Slovakia, that plays in the Slovak Super Liga. Founded as 1. sSK Bratislava in 1919, the club changed its name to Slovan Bratislava in 1953. Slovan is the most successful team in Slovakia with the most titles in both league and cup in the country. After reading the paragraphs above, we are interested in knowing the entity with which 'viktor tegelhoff' exhibits the relationship of 'country of citizenship'. Find the answer from the choices below. Choices: - austria - czechoslovakia - poland - slovakia
A:
czechoslovakia