The correct option is E 0.1M LiNO3
0.1 M LiNO3 indicates a red flame when ionized with a Bunsen burner.
Metal ions impart characteristic colour to flame.
Given below are the flame colors and the metal ions that impart that colour.
Red: Lithium, strontium
Orange: Calcium
Yellow: Sodium
Green: Barium, copper
Violet: Potassium