Why would a JavaScript debugger, that is stopped at line 06, fall to show the viewdata variable in the inspection tool?

Given the SFRA Controller below:

Why would a JavaScript debugger, that is stopped at line 06, fall to show the viewdata variable in the inspection tool?
A . cache. applyDefauItCache is not a valid middleware.
B. viewdata is declared but not assigned.
C. viewdata is assigned but not declared.
D. viewdata is a B2C Script reserved name.

Answer: C

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