The graph shows the production of when (in lakh tons) by states M, N, and O in four consecutive years. Find the year which has the minimum production of wheat.

2019

Production of wheat in 2017 = 574 + 534 + 256 = 1364

Production of wheat in 2018 = 490 + 430 + 317 = 1237 

Production of wheat in 2019 = 332 + 310 + 290 = 920

Production of wheat in 2020 = 620 + 550 + 185 = 1355

Production of wheat is minimum in 2019