Circuit lacks diagram for analysis

Steps:

• Without a diagram, the configuration of lamps and ammeters is unknown.
• Identical lamps imply equal resistance, but connections (series, parallel, or mixed) determine current paths.
• Ammeter readings depend on branch currents or total current.
• No specific setup provided to compare I1, I2, I3.

Why D is correct:

• Not enough information to confirm any relation, including I2 > I3.

Why the others are wrong:

• A: Equal currents assume all series, but unverified.
• B: I1 larger assumes main line vs. branches, but unverified.
• C: Assumes unequal branches with I1 total, I3 middle, I2 smallest, but unverified.

Final answer: Not enough information.