Four machines, A, B, C, and D, are connected on a computer network. It is feared that acomputer virus may have infected the network. Your security team makes the followingstatements:a. If D is...

Four machines, A, B, C, and D, are connected on a computer network. It is feared that acomputer virus may have infected the network. Your security team makes the followingstatements:a. If D is infected, then so is C.b. If C is infected, then so is A.c. If D is clean, then B is clean but C is infected.d. If A is infected, then either B is infected or C is clean.Assuming that these statements are all true, what can you conclude? Explain your reasoning.