Classify the emotion associated with the given sentence.
She felt angry, frustrated and helpless all at once.
The emotions associated with the given sentence are anger, frustration, and helplessness.
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the emotion associated with the given sentence.

### Input:
She felt angry, frustrated and helpless all at once.

### Output:
The emotions associated with the given sentence are anger, frustration, and helplessness.