You are given a sample of an unknown metal. You weigh the sample and find that its weight is 29.4N. You add 1.25×10⁴ J of heat energy to the sample and find that its temperature increases from 52°C to 70°C. What is the specific heat of this unknown metal?

• A. 23.6 J/(kg⋅K)
• B. 231.5 J/(kg⋅K)
• C. 14.3 J/(kg⋅K)
• D. 1.20×104 J/(kg⋅K)