
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
Points $A$, $B$, $C$, and $D$ are on the circumference of a circle in that order. If the circular distance between points $A$ and $B$ is 12 units, the distance between $B$ and $C$ is 5 units, and the distance between $C$ and $D$ is 4 units, find the shortest distance along the circle's circumference between points $A$ and $D$ assuming the circle's circumference is 30 units.
A) 6 units
B) 9 units
C) 15 units
D) 21 units
E) 30 units

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