Enumerate the footnote narratives of The Bahamas under the series code SH.DTH.IMRT in the year 1984.
narratives is Description; The Bahamas is the name of the country where Country = 'The Bahamas'
SELECT DISTINCT T1.Description FROM FootNotes AS T1 INNER JOIN Country AS T2 ON T1.Countrycode = T2.CountryCode WHERE T1.Year = 'YR1984' AND T2.ShortName = 'The Bahamas' AND T1.Seriescode = 'SH.DTH.IMRT'