Marginal costing

No, not right. The contribution will always be higher than the profit because the profit is the contribution after subtracting the fixed costs. The profit using marginal costing will be different from the profit using absorption costing due to changes in the level of inventory over the period (whether an increase or a decrease).

Sir in the second paragraph you stated that “The profit using marginal costing will be different from the profit using absorption costing.” Sir marginal costing profit being different in the sense Increase or decrease of profits compared to absorption costing?

Depending on whether the inventory increases or decreases over the period, the absorption profit will be higher or lower than the marginal profit. Do see pages 42 and 43 of our lecture notes and the free lectures working through that chapter.