Multiple choice technology testing What are all the interaction and maintenance services provided by TCS to IVR systems VXML, DTMF technology and graphical & Video Output VXML , Text to Speech and computer telephony Integration and Speech recognition DTMF, Text to Speech and computer telephony Integration and Speech recognition DTMF, Text to Speech, Computer telephony Integration ,Speech recognition and graphical output Reveal answer Fill a bubble to check yourself D Correct answer Explanation TCS provides comprehensive IVR services including DTMF (touchtone) input, Text-to-Speech output, Computer Telephony Integration (CTI), speech recognition, and graphical output capabilities. Options A, B, and C are incomplete.