When did Sathyamurthi became the mayor of Madras

Who founded the 'Bahiskrit Hitkaraini Sabha'

Consider the following statements 

Assertion (A) : Team Indus, space craft will begin its mission to Mars in December 2017

Reason (R) : A second experiment from the central university at Pondicherry has been chosen for the mission.

Education is 

Road safety week celebrated in Every year in the first week of which month

Who established a 'Dravida Sangha' at Madurai in 3rd century A.D.