He is an outstanding lawyer, _____, he should have a high status

He is an outstanding lawyer, _____, he should have a high status in society.
A、therefore
B、because
C、however
D、and then
【正确答案】：A
【题目解析】：therefore因此；because因为；however然而；and then然后，于是句意：他是一个杰出的律师，因此，他应该在社会上有很高的地位。