What is stored in str after the following code executes? ```
String str = ""Computer Science"";
int i = 0;
while (i < 8) {
if (str.indexOf(""m"") < i) {
str = str.substring(0, 2) + str;
}
i += 2;
}
```
a. Computer Science
b. CoComputer Science
c. CoCoComputer Science
d. CoCoCoComputer Science
e. Computer ScienceCo
