Program Project#8 (FUNCTION). Write a complete C program to take a depth (in kilometers) inside the earth as input data;compute and display the temperature at this depth in degrees Celsius and degrees Fahrenheit. The relevant formulas are Celsius = 10 (depth) + 20 (Celsius temperature at depth in km) Fahrenheit = 1.8 (Celsius) + 32 Write this program using two different functions -- one function "celsius_at_depth" should compute and return the Celsius temperature at a depth measured in kilometers. The second function "fahrenheit" should convert a Celsius temperature to Fahrenheit