The highest temperature among the following is

Options

A. `203^(@)F`
B. 278 K
C. `105^(@)C`
D. All are equal

Explanation

To determine the highest temperature among the given options (203°F, 78K, and 105°C), we need to convert all temperatures to the same unit. We will convert everything to degrees Celsius for easier comparison.

### Step 1: Convert 203°F to Celsius
To convert Fahrenheit to Celsius, we use the formula:
\[ °C = \frac{5}{9} (F - 32) \]
Substituting the given Fahrenheit value:
\[ °C = \frac{5}{9} (203 - 32) = \frac{5}{9} (171) \]
Calculating this gives:
\[ °C = \frac{5 \times 171}{9} = \frac{855}{9} \approx 95°C \]

### Step 2: Convert 78K to Celsius
To convert Kelvin to Celsius, we use the formula:
\[ °C = K - 273 \]
Substituting the given Kelvin value:
\[ °C = 78 - 273 = -195°C \]

### Step 3: Compare the temperatures
Now we have:
- 203°F = 95°C
- 78K = -195°C
- 105°C = 105°C

### Step 4: Identify the highest temperature
Comparing the temperatures:
- 95°C (from 203°F)
- -195°C (from 78K)
- 105°C (already in Celsius)

The highest temperature is **105°C**.

### Final Answer
The highest temperature among the given options is **105°C**.

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