Please see question attached.

4. Five cryptanalytic machines have been developed to decode 1500 messages encrypted by the Little Enigma machine. The table below presents information on the number of messages assigned to each machine and the machine's failure rate (i.e., the percentage of messages the machine was unable to decode). Aside from this information, we do not know anything about the assignment of each message to a machine or whether the machine was able to correctly decode the message. Machine Number of messages Failure rate Banburismus 300 10% Bombe 400 5% Herivel tip 250 15% Crib 340 17% Hut 6 210 20% Suppose that we select one message at random from the pool of all 1500 messages but find out this message was not properly decoded. Which machine is most likely responsible for this mistake