Bottles containing \[{{C}_{6}}{{H}_{5}}I\] and \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}I\]lost their original labels. They were labelled A and B for testing. A and B were separately taken in test tubes and boiled with \[NaOH\]solution. The end solution in each tube was made acidic with dilute \[HN{{O}_{3}}\]and then some \[AgN{{O}_{3}}\] solution was added. Substance B give a yellow precipitate. Which one of the following statements is true for this experiment [AIEEE 2003]

• A. A was \[{{C}_{6}}{{H}_{5}}I\]
• B. A was \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}I\]
• C. B was \[{{C}_{6}}{{H}_{5}}I\]
• D. Addition of \[HN{{O}_{3}}\]was unnecessary