Problematic Mathematics, or Simple Logic?

Discrete Mathematics Level 2

You have to choose 40 numbers, each having a value less than 100.

How many combinations can be made such that the average of these 40 numbers is greater than 120?

None of These \[\left( \begin{matrix} 40 \\ 10 \end{matrix} \right) \] 40 \[\left( \begin{matrix} 40 \\ 40 \end{matrix} \right) \] 120 59 \[\left( \begin{matrix} 40 \\ 25 \end{matrix} \right) \] 124

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