Three lines l, m, and p intersect at two points and form eights angles. Line l and m are parallel. If m \angle 5 = 7 x - 5 and m \angle 4 = 2 x + 23, find x.
Choices:
A:5.6
B:18
C:20
D:22
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: Three lines l, m, and p intersect at two points and form eights angles. Line l and m are parallel. If m \angle 5 = 7 x - 5 and m \angle 4 = 2 x + 23, find x.
Choices:
A:5.6
B:18
C:20
D:22
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: Three lines l, m, and p intersect at two points and form eights angles. Line l and m are parallel. If m \angle 5 = 7 x - 5 and m \angle 4 = 2 x + 23, find x.
Choices:
A:5.6
B:18
C:20
D:22