Being a hardworking young man, he is admired by all his fellow workers.这句话相当于以下哪一句话？

A、Although he is a hardworking young man, he is admired by all his fellow workers.;
B、Because he is a hardworking young man, he is admired by all his fellow workers.;
C、If he is a hardworking young man, he is admired by all his fellow workers.;
D、When he is a hardworking young man, he is admired by all his fellow workers.