Following figure shows two processes A and B for a gas. If ∆QA and ∆QB are the amount of heat absorbed by the system in two cases, and ∆UA and ∆UB are changes in internal energies, respectively, then:

• A. ΔQA < ΔQB, ΔUA < ΔUB
• B. ΔQA > ΔQB, ΔUA > ΔUB
• C. ΔQA > ΔQB, ΔUA = ΔUB
• D. ΔQA = ΔQB, ΔUA = ΔUB