What is the test weight of Phalaris minor seed (in grams)?

Correct option is C

Phalaris minor is a major weed of the wheat fields which belongs to the family Gramineae.
It resembles wheat seedlings to a large extent.
On average each plant produces 10,000 - 30,000 seeds.
Test weight of Phalaris minor is 2 g while that of the wheat plant is 40 g.