AMC 10A 2019 Problem 7

Two lines with slopes \dfrac{1}{2} and 2 intersect at (2,2). What is the area of the triangle enclosed by these two lines and the line x+y=10 ?

Answer Choices
A. 4
B. 4 \sqrt{2}
C. 6
D. 8
E. 6 \sqrt{2}