Comprehension Passage
Following paragraph shows percentage awards secured by BJP, INC, NCP, others and NOTA in Maharashtra assembly elections.

If the ratio of total number of votes in Maharashtra today to the total number of votes here 5 years ago is 2 : 1, and the percentage of votes received by all parties remain the same, then how many votes BJP received 5 years ago? (Assuming total number of votes today be 20 million)
1
4.2 million
2
4.8 million
3
4.5 million
4
5.8 million
5
Other than above