Exam 200-125 Question id=236 Network Fundamentals

In which formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written?

A. fd15:0db8:0000:0000:700:3:400F:527B
B. fd15::db8::700:3:400F:527B
C. fd15:db8:0::700:3:4F:527B
D. fd15:0db8::7:3:4F:527B
E. fd15:db8::700:3:400F:572B