API GetRefreshRates

Returns a list of available refresh rates
 refreshrate1, refreshrate2, refreshrate3, ... = GetRefreshRates([resolution])
===Takes===
: Number resolution (optional)
:: Index of the resolution you want to get the refresh rates for. Must be an index returned by GetScreenResolutions().
:: Passing nil defaults this argument to 1, the lowest resolution available.
===Returns===
: Number refreshrateN
:: Value of the Nth refresh rate
===Example===
 for i = 1, select("#", GetRefreshRates()) do
 local entry = select(i, GetRefreshRates())
 DEFAULT_CHAT_FRAME:AddMessage(format('Refresh rate %d: %d Hz', i, entry))
 end
Output:
 Refresh rate 1: 60 Hz
 Refresh rate 2: 75 Hz
 Refresh rate 3: 85 Hz
 Refresh rate 4: 100 Hz
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