Task: Question Answering
Input (English): Problem: audrey 4 hours to complete a certain job. ferris can do the same job in 3 hours. audrey and ferris decided to collaborate on the job, working at their respective rates. while audrey worked continuously, ferris took 5 breaks of equal length. if the two completed the job together in 2 hours, how many minutes long was each of ferris ’ breaks ?
Options: a. 5, b. 6, c. 15, d. 20, e. 25
Output (English): b