Around twelfth century, Sufi Silsilas began to crystallize in different parts of the Islamic world to signify between the
1. continuous link master and disciple 2. unbroken spiritual genealogy to the Prophet Muhammad 3. the transmission of spiritual power and blessings to devotees
Select the correct answer using the code given below.

Options

A. 1 and 2 only
B. 2 only
C. 1 and 3 only
D. 1, 2 and 3