Given that f(x) is continuous, ∫ −2
2
​
f(x)dx=7,∫ 0
4
​
f(x)dx=−3, and ∫ −2
4
​
f(x)dx=2. Then ∫ 0
2
​
f(x)dx= A. 0 B. 2 C. −3 D. 4 E. −6