China's population growth in 2018 was 0.5 % per annum. If the population growth rate of China remains the same (0.5%) till the year 2049 and China's current population is 1.4 billion forecast the Chinese population for the year 2049. (Assume as current year, the year 2020).

a): 0.6966 billion b): 1.617 billion c): 2.27 billion d):3.189 billion e): other