Change of Speech - Verbal and Reasoning

Directions to SolveIn the questions below the sentences have been given in Direct/Indirect speech. From the given alternatives, choose the one which best expresses the given sentence in Indirect/Direct speech.
Q1:

She said to her friend, "I know where is everyone"

A She told that she knew where was everyone.

B She told her friend that she knew where was everyone.

C She told her friend that she knew where is everyone.

D She told her friend that she knows where was everyone.

ANS:B - She told her friend that she knew where was everyone.

No answer description is available.