Noise levels at a traffic site are recorded for one hour at a sampling interval of 1 second and percentile indices of noise L1, L10, L50, L90 are computed from the data. The indices are then arranged in increasing order in terms of their values starting from minimum to maximum. which of the following options represents their correct order?

• A. L1, L10, L50, L90
• B. L10, L50, L90, L1
• C. L50, L90, L10, L1
• D. L90, L50, L10, L1