
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In 2023, Investor Iris invested $200 dollars for two years. In the first year, her investment suffered a $10\%$ loss, but during the second year, the remaining investment showed a $30\%$ gain. After the two-year period, what was the net percentage change in Iris's investment?
**A)** 10% loss
**B)** 5% gain
**C)** 15% gain
**D)** 17% gain
**E)** 20% gain

Present the answer in LaTex format: \boxed{Your answer}
user