The first generation Islamists played a role between 1850-1924 years. The main channel of the first generation Islamists is the magazine of Sırat-ı Müstakim (later called Sebilürreşat) which intellectuals such as Mehmet Akif, Eşref Edip and Babanzade Ahmed Naim published in the Second Constitutional period. In addition, Namık Kemal, Ali Suavi and Said Halim Pasha are among the important thinkers of Islamist thought in this period. 

The correct answer is B.