All of us were so excited at the news ______ we would be sent abroad to study for two years ______ we jumped with joy.

A． what； what

B．that； that

C． that； what

D．what； that

配合煤料炼焦前的预处理、炼焦煤的质量和炼焦过程三个方面是决定焦炭质量的主要因素。