The signal flow diagram of a system is shown in the given

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The signal flow diagram of a system is shown in the given figure. The number of forward paths and the number of pairs of non-touching loops are respectively—

1. 3, 1
2. 3, 2
3. 4, 2
4. 2, 4

Correct Option: A

The forward paths are
— A B C D E F
— A B D E F
— A B E F i.e., 3
The loop B C B and D D are non-touching loop
Hence alternative (A) is the correct choice.