According to the program log, one news segment must last exactly 9:09 . The following are the lengths of stories proposed for inclusion in this segment. Are the stories, taken together, over or under the specified time, or are they exactly the correct length? If over or under, by how much? Lengths of stories: 0:23, 0:41, 1:02, 0:59, 0:16, 2:18, 0:40, 0:29, 1:18, 1:06

a. exactly the correct length
b. over by one second
c. under by one second
d. over by three seconds
e. under by five seconds

d