In which of the following cities India’s first monorail service has been launched, recently?

In which of the following cities India’s first monorail service has been launched, recently?
 [A]Mumbai
 [B]Bangalore
 [C]Kolkata
 [D]Chennai
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
ANS - [A]Mumbai