Which Egyptian linguist authored the first comprehensive descriptive grammar of Egyptian Colloquial Arabic in English, published in 1917?

• A Taha Hussein
• B Spiro Bey (Socrates Spiro) ✓
• C Ahmad Lutfi el-Sayed
• D Jurji Zaydan

Socrates Spiro (Spiro Bey), a Cairo-based scholar, published 'An Arabic-English Dictionary of the Colloquial Arabic of Egypt' in 1895 and a grammar of the Egyptian colloquial in 1917, pioneering the academic study of Egyptian spoken Arabic for Western learners.