Absorption and Marginal costing

Example 2
The following data is available on the production and sales for the first three years of a company’s new product.
Year 1 Production units 5,000 Sales units 4,000
Year 2 6,000 6,000
Year 3 4,000 5,000
Variable costs per unit, selling price and total fixed costs per year were constant over the three-year period. The company is considering the use of either marginal or absorption costing.
Which of the following statements is/are true?
(1) Absorption costing will show a lower profit than marginal costing in Year 1
(2) Marginal costing will show a lower closing inventory valuation than absorption costing inYear2 (3) Total profit over the three-year period will be the same under both methods
A 1 only
B 2 only
C 3 only
D 2 and 3
The correct answer is D.

Sir i understood how option(3) was the correct answer but I don’t seem to understand how option (2) is also the correct answer

the opening inventory for option 2 was 1000
and the closing inventory was also 1000( 6000(production)+1000(opening inventory)-6000(sales))

if both inventory levels are the same in year 2 doesn’t that mean that the absorption and marginal profit are equal???