Answer: A) 83
Step-by-step explanation:
Representing this segments in a number line, and supposing that they are arranged in alphabetical order:
Here we can see that if we sum all of the segments they must be equal to 18x+44:

Combining like terms:

Now we move all of the terms with x to the right side and all of the independent numbers to the left side:

And now that we know the value of x, we can find BC:

Which is option A)