In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

In black and white

In writing

The idiom "in black and white" means in writing. It is an informal expression that means something that is written down, as opposed to something that is said verbally. The idiom is thought to have originated in the 18th century, and it is believed to be a reference to the way that documents were traditionally written in black ink on white paper.

The other options for the meaning of the idiom are incorrect. In trouble means to be in a difficult or dangerous situation. In suspense means to be waiting anxiously for something to happen. In brief means in a short and concise way.