Multiple users at same frequency
A. 1, 2 and 3 are correct
B. 2 and 3 are correct
C. 1, 2 and 4 are correct
D. All the four are correct
Answer:A
Multiple users at same frequency
A. 1, 2 and 3 are correct B. 2 and 3 are correct C. 1, 2 and 4 are correct D. All the four are correct