In a patient, corneal scraping reveals narrow angled septate hyphae, which of the following is likely etiologic agent -

Option a: Incorrect- Mucor has aseptate hyphae and not septate Option b: Correct-Aspergillus causes fungal keratitis and has narrow angled septate branching hyphae Option c: Incorrect- Histoplasma does not cause fungal keratitis Option d: Incorrect- Candida characteristically shows budding yeast-like cell morphology and also does not cause fungal keratitis.