
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
Ms. Laura teaches a math class with 20 students. She calculated the average grade for her students' tests and noted that excluding Bella's test, the average grade was 82. When Bella's test was included, the average grade of the class went up to 85. What was Bella's score on the test?
A) 138
B) 142
C) 150
D) 155

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