Transfer Pricing - How to know if its Marginal or Absorption in Income statement

Hi sir John, Would like to ask you how to know if it's Marginal or Absorption costing to construct the Net Income for each division? Im talking about the treatment of the 2 fixed costs below: "Annual divisional fixed production overheads" and "Annual divisional fixed administrative overheads". The transfer price is set at Wolverhampton's full cost plus a 25% profit mark up. The answer provided to me is for Birmingham Division, gross profit minus (875k+375k) so I assume they are using Marginal costing but I used Absorption costing instead. Appreciate your kind assistance and I thank you in advance! Wolverhampton Division Birmingham Division External Selling Price per unit £25 £32 Direct material cost per unit £8 £3 Direct labour cost per unit £5 £3 Annual divisional fixed production overheads £2,500,000 £875,000 Annual divisional fixed administrative overheads £1,000,000 £375,000 Variable selling overheads per unit £1.75 £1.75 Annual production capacity 1,250,000 units 700,000 units Sales to outside customers 900,000 units 350,000 units Internal sales 350,000 units