28. String method length returns ___________________.

a. the number of quotes in a String

b. the number of punctuation marks in a String

c. the number of characters in a String

d. the number of uppercase characters in a String

29. File input streams can be used to input and output data. Which of the following stream types are supported by standard Java I/O packages. (Select all that apply)

a. Trout-filled streams

b. Block-based streams

c. Character-based streams

d. Byte-based streams