Normal distribution with upper and lower boundaries?

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I am working on the following problem:

The scores on a Physics test follow a normal distribution with mean $70 \%$ and standard deviation $8 \%$. Calculate the probability of a student to score more than $85 \%$.

Does it make sense to have an upper boundary for a normal distribution? Which one of the following calculations should I do?

TI-nspire CX command: normCDF(lower boundary, upper boundary, mean, stdev)

Option 1: $normCDF(85, 100, 70, 8) = 0.030308$

Option 2: $normCDF(85, 9E999, 70, 8) = 0.030396$

Thank you.