Convert the following temperatures from mathrm(K) to ( )^circ mathrm(C) .

## Step 1: Understand the Conversion Formula<br />### The conversion formula from Kelvin (K) to Celsius (°C) is given by: <br />\[<br />°C = K - 273.15<br />\]<br /><br />## Step 2: Convert 100 K to Celsius<br />### Using the formula, convert 100 K to Celsius:<br />\[<br />°C = 100 - 273.15 = -173.15<br />\]<br />### Rounding to the nearest whole number gives us \(-173 °C\).<br /><br />## Step 3: Convert 273 K to Celsius<br />### Using the formula, convert 273 K to Celsius:<br />\[<br />°C = 273 - 273.15 = -0.15<br />\]<br />### Rounding to the nearest whole number gives us \(0 °C\).<br /><br />## Step 4: Match with Given Options<br />### From the options provided in the overlay, \(-173\) matches the conversion of 100 K to Celsius.