单选题Which constructs a BufferedIputStream？（）ANew BufferedInputStream（“in.txt”）；BNew BufferedInputStream（new File（“in.txt”））；CNew BufferedInputStream（Writer（“in.txt”））；DNew BufferedInputStream（new Writer（“in.txt”））；ENew BufferedInputStream（new InputStream（“
题目
单选题
Which constructs a BufferedIputStream？（）
A
New BufferedInputStream（“in.txt”）；
B
New BufferedInputStream（new File（“in.txt”））；
C
New BufferedInputStream（Writer（“in.txt”））；
D
New BufferedInputStream（new Writer（“in.txt”））；
E
New BufferedInputStream（new InputStream（“in.txt”））；
F
New BufferedInputStream（new FileInputStream（“in.txt”））；