Which of the following statements is incorrect regarding the republics and monarchies in Maha Janapadas?

1. Ayodhya, Saketa, and Shravasti were three important cities in Kashi.

2. Champa, the capital city of Anga, was annexed to Magadha in the time of Bimbisara.

3. The earliest dynasty of Magadha was founded by Brihadratha, however, it came into prominence under Bimbisasra and Ajatsatru.

4. The Vatsa country had a monarchical form of government with its capital at Kausambi.

Select the right code from the code given below.