
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
Three layers of numbers are arranged such that each number in the second and third rows is the product of the two numbers directly above it in the row above. Given the following configuration, find the missing number denoted by $y$ in the top row:

\[
\begin{array}{c}
  y & 10 & z \\
    & 50 & \\
    & 300 & \\
\end{array}
\]
($50 = y \times 10$ in the second row and $300 = 50 \times z$ in the third row.)
A) 3
B) 4
C) 5
D) 6
E) 7

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