1. The RegEx expression [^xyz] does this

a. Matches uppercase XYZ

b. Matches all letters except xyz

c. Matches all letters except XYZ

d. None of the above

2. The RegEx expression[m-t&& [^rs]] does this

a. Matches all letters m thru s

b. Matches all letters m thru t

c. Matches all letter m thru q and t

d. None of the above

3. In the statement s1.compareTo(s2), if s1="hello" and 2="goodbye", what is the result of executing the statement?

a. 0

b. -1

c. 1

d.-10