Which can fill in the blank to have the code print the single digit 9? 

A. Only mapToDouble

B. Only mapToInt

C. Only mapToLong

D. Both mapToDouble and mapToInt

E. mapToDouble, mapToInt, and mapToLong

F. None of the above.

var stream LongStream.of (9); stream.. = (p> p). for Each (System.out::print);