For roast pork or ham, which time-temperature combination is listed as safe?

• A. 130 Degrees for 112 Minutes, 140 Degrees for 12 Minutes, 145 Degrees for 4 Minutes
• B. 140 Degrees for 12 Minutes
• C. 165 Degrees for Less Than One Second
• D. 155 Degrees for 17 Seconds

Answer: (A)

The main idea is that safety comes from pasteurizing the meat: heat destroys harmful bacteria, and you can achieve the same safety with different temperature-time combinations. For pork roasts and ham, there are recognized pairings that ensure pasteurization by the time the center reaches a safe temperature. The standard safe combos are: 130°F held for 112 minutes, or 140°F held for 12 minutes, or 145°F held for 4 minutes. These show how higher temperatures need less time to achieve the same safety effect. The option that lists all three of these safe pairings matches the published guidance, reflecting the time-temperature trade-off used to ensure the meat is safe. Other choices either present only a single safe pairing, or propose a combination that isn’t part of the recognized safe-by-time chart and wouldn’t reliably ensure safety in practice.