Answer:
Option A.
Step-by-step explanation:
Consider below figure attached with this question
Given information: GI = 20 and H = 100°
GHIJ is a rhombus, so all sides are equal.
Since GH=HI, so
Let,
The sum of all interior angles of a triangle is 180 degree.
In a triangle smaller angle have smaller opposite side and greater angle have larger opposite side.
The value of HI is less than 20.
Therefore, the correct option is A.