<prompt> In a patient, corneal scraping reveals narrow angled septate hyphae, which of the following is likely etiologic agent -MucorAspergillusHistoplasmaCandida  <response>: Option a: Incorrect- Mucor has aseptate hyphae and not septateOption b: Correct-Aspergillus causes fungal keratitis and has narrow angled septate branching hyphaeOption c: Incorrect- Histoplasma does not cause fungal keratitisOption d: Incorrect- Candida characteristically shows budding yeast-like cell morphology and also does not cause fungal keratitis. 