Select the most appropriate meaning of the underlined idiom in the given sentence. When the mixer would not work Naren's mother said, "If it's not one thing, it's another. How will I manage?"

• A. when one thing goes wrong, then another, and another
• B. when we entertain one guest, then there are many many more coming
• C. when we know a cause, then there isn't another to be looked for
• D. when a machine is not functional, it makes others also malfunction