Respuesta :
two years were 32,400,000 tons and 20,300,000 tons
so total = 32,400,000 + 20,300,000
= 52,700,000
= 5.27 x 10^7 tons
ans is C
so total = 32,400,000 + 20,300,000
= 52,700,000
= 5.27 x 10^7 tons
ans is C