The diagram shows the setup of an experiment. A few observations of the experiment are listed in the table below the diagram. A beaker filled three-fourths with a liquid labeled colorless silver nitrate solution is shown. A small strip is shown inside the beaker. The strip is labeled copper strip. The title of the image is Experimental Setup.
Experimental Observations
Observation Description
1 Color of solution turned blue
2 Shiny hair like crystals deposited on the copper strip
Which of the following is the correct explanation for one of the given observations?

Observation 1 is a result of silver ions moving into the solution

Observation 2 is a result of nitrate ions moving into the solution

Observation 1 is a result of silver ions changing their oxidation state

Observation 2 is a result of silver ions changing their oxidation states