1. Bihar is India’s poorest state, with an annual per capita income of $111, lower than in the most impoverished countries of the world.

(A) lower than in

(B) lower than that of

(C) and lower than that of

(D) which is lower than in（B）

(E) which is lower than it is in

原文比较没有用of 啊，倒是e 我觉得the income is in 比较合适

an annual per capita income of $111 lower than that of

这里income 和that 比较

of the most impoverished countries of the world只是做定语修饰that（=income）。