A) Letter\[\to \] Newspaper\[\to \]Radio\[\to \] Television
B) Letter\[\to \]e-mail\[\to \]Radio\[\to \]Television
C) Telephone\[\to \]ISD\[\to \]STD\[\to \]Local
D) Telegram \[\to \] Speed post \[\to \] Postcard \[\to \] e-mail
Correct Answer: A
Solution :
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