The amount on Indian currency notes is written in 17 languages total - 15 official Indian languages appearing in the language panel, plus Hindi and English which appear on the obverse and reverse sides. This includes Assamese, Bengali, Gujarati, Kannada, Kashmiri, Konkani, Malayalam, Marathi, Nepali, Odia, Punjabi, Sanskrit, Tamil, Telugu, and Urdu along with Hindi and English. Option A (17) is correct.