Which among the following events happened earliest ?

1. The question asks to identify the earliest among the given historical events. 2. Event (A): Swami Dayanand established Arya Samaj in 1875. 3. Event (B): Dinabandhu Mitra wrote the play Neeldarpan (The Indigo Mirror) depicting the plight of indigo farmers in 1858-1859. It was published in 1860. 4. Event (C): Bankim Chandra Chattopadhyay wrote Anandmath between 1881 and 1882. It was published in 1882. 5. Event (D): Satyendranath Tagore became the first Indian to succeed in the Indian Civil Services Examination in 1863. 6. Comparing the dates, the writing of Neeldarpan (1858-1859) happened earliest.