Letter B is the answer to your question
Antagonist - a character or group of characters which stand is opposition to the protagonist or the main character
The answer is B. 5 degrees celcius
The formula is
(temprature in celcius)=(temprature in fahrenheit -32) *5/9
or
Temprature in celcius=( temprature in fahrenheit-32) * 1.8
Substitute 136.5 for y.




Compare this equation with 
a = 1, b = - 191, c = 8190
or
or

or

or

or

or

x = 126 or x = 65
Hence, the points on the curve are (65, 136.5) and (126, 136.5).
The width of the air space is the distance between these points.
Width = 
= 
= 126 - 65
= 61
Hence, width of the air space is 61m.