
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
A five-digit number like 45132 is defined as a "wave number", where the tens and thousands digits are greater than the digits immediately adjacent to them. The number of unique five-digit "wave numbers" that can be formed using the digits 1, 2, 3, 4, and 5, without repetition, is
A) 12
B) 24
C) 16
D) 20

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