(A) 10 to 20 kilometer
(B) 20 to 30 kilometer
(C) 30 to 40 kilometer
(D) 40 to 50 kilometer
The answer is: (B) 20 to 30 kilometer
(A) 10 to 20 kilometer
(B) 20 to 30 kilometer
(C) 30 to 40 kilometer
(D) 40 to 50 kilometer
The answer is: (B) 20 to 30 kilometer