What is the most compact representation of the following IPv6 address: 2001:db8:0000:0000:cafe:0000:0000:1234 ?

What is the most compact representation of the following IPv6 address: 2001:db8:0000:0000:cafe:0000:0000:1234 ?
A. 2001:db8::cafe::1234
B. 2001:db8::cafe:0000:0000:1234
C. 2001:db8:0:0:cafe::1234
D. 2001:db8::cafe:0:1234