BecausetherewasaneedtheMinistryofCivilAviationhasproposedamendmenttotheCivilAviationRequirementsandhenceassumptionIistrueWehoweverdonrsquotknowanythingaboutthefrequencyofsuchincidentsandthusassumptionIIcanrsquotbetrueHenceonlyAssumptionIiscorrectandoption1isthecorrectanswer