The Pakistan Telecommunication Authority (PTA) has launched __________ system to block stolen, & smuggled cellphones.

The Pakistan Telecommunication Authority (PTA) has launched __________

1.	The Pakistan Telecommunication Authority (PTA) has launched __________ system to block stolen, & smuggled cellphones.
A.	RBS
B.	DVS
C.	DIRBS
D.	MBS
Answer» D. MBS