Consider seven wireless stations, A, B, C, D, E, F, and G. A can communicate with all stations except F. B can communicate with A, D, E, and F. C can communicate with B and G. D can communicate with A, E, and F. E can communicate A, B, D, and G. F can communicate with B and E. G can communicate with C and E. (a) When A is sending to C, what other communications are possible? (b) When B is sending to D, what other communications are possible? (c) When C is sending to B, what other communications are possible? (d) When D is sending to F, what other communications are possible? (e) When E is sending to G, what other communications are possible?