If the sums of n terms of two arithmetic progressions are in the ration 3n+55n+7,3n+55n+7, then their nth terms are in the ration

• ক 5n+1/3n+1
• খ 5n+1/2n+1
• গ 3n+1/5n+1 ✅ সঠিক উত্তর
• ঘ 2n+1/3n+1