The table given below represents the production and sales of wheat in 4 different countries A, B, C and D over a period of 4 years. At the end of year 2010 A, B, C and D had a stock of 5200, 3500, 7835 and 1956 (in '000 quintals) of wheat respectively. For any given year, the stock of wheat is calculated as :
Stock of year (n + 1) = stock at end of year (n) + production in year (n + 1) - sales in year (n + 1)
And Surplus or year (n) = production in year (n) - sales in year (n)

What can be said about total surplus of country B and country D over the 4 years?

Options

A. Surplus of B = Surplus of D
B. Surplus of D `gt` Surplus of B
C. Surplus of B `gt` Surplus of D
D. No relation is there

Answer

B