Which of the following best describes the 'Zipf's Law' in the context of corpus linguistics?

1. ক
   The frequency of any word is inversely proportional to its rank in the frequency table
   
2. খ
   The length of a word is directly proportional to its frequency
   
3. গ
   The number of unique words grows linearly with the corpus size
   
4. ঘ
   Semantic similarity is determined by the distance between word vectors