The total number of vehicles of type B produced in 2013, 2014 and 2017 is x% of the total number of vehicles of type A produced in 2014, 2015 and 2018. The value of x is closest to:

The number of cars produced by the company are as follows: 

Total number of Type B vehicles produced in 2013, 2014 and 2017 = (200000 + 280000 + 270000) = 750000

Total number of Type A vehicles produced in 2014, 2015 and 2018 = (250000 + 200000 + 450000) = 900000 

Total number of Type B vehicles as a percentage of total number of Type A vehicles = $$\ \dfrac{750000}{900000}\times100=83.33\%$$

Hence, total number of Type B vehicles is 83.33% of the total number of Type A vehicles. 

$$\therefore\ $$ The required answer is A.