Select the correct alternative from the given choices.
A message can be sent from one transmitter to another among 9 transmitters A, B, C, D, E, F, G, H and I, as shown below.
From A to B, from B to C, from I to D, from B to E, from D to H, from E to F, frot E to H, from G to H, from F to G, from I to I, from G to I and from D to I.
In how many ways can a messa e be sent from A to I ?

Options

A. 7
B. 6
C. 5
D. 4

Answer

C

Explanation

The different ways are
`A - B - C - D -I , A - B - C - D - H - I,`
`A - B - E - H - I , A - B - E - F - G - I`
`A - B - E - F - G - H - I`
i.e , total 5 ways.