Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
When the birth rate is high, the expectation of life is low.
A. The birth rate and the expectation of life are high and low respectively.
B. The higher the birth rate, the lower the expectation of life.
C. The birth rate is as high as the expectation of life.
D. The high rate of giving birth depends on the low rate of expectation of life.