सेल के टॉप राइट कॉर्नर पर रेड ट्रायंगल इंडीकेट करता है , Red triangle at the top right corner of a cell indicates

Solution

B. There is a comment associated with the cell

Explanation

A red triangle at the top right corner of cell indicates a comment associated. If you place mouse point over the triangle it will show the comment typed.