单选题 By "Dr. Clark lived for 112 days", the author most probably means that ______.

A、 the replacement of Dr. Clark's bean was a failure
B、 there was still a long way to go in applied bionics
C、 applied bionics was promising
D、 the first artificial heart was most effective

【正确答案】 C

【答案解析】解析：由第二段第一句可知答案。