The correct answer is C) TSTRANSCO & TSSPDCL.
TSTRANSCO (Telangana State Transmission Corporation Limited) is responsible for the transmission of electricity in Telangana. TSSPDCL (Telangana State Southern Power Distribution Company Limited) is responsible for the distribution of electricity in Telangana.
TSGENCO (Telangana State Power Generation Corporation Limited) is responsible for the generation of electricity in Telangana. However, it does not distribute electricity to consumers. Instead, it sells electricity to TSTRANSCO, which then transmits it to TSSPDCL. TSSPDCL then distributes it to consumers.
Private distribution companies are not responsible for power distribution in Telangana.