What is the alternative notation for the IPV6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72?

What is the alternative notation for the IPV6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72?

A.
B514:82C3:0029::EC7A:0000:EC72

B.
B514:82C3:0029:EC7A:EC72

C.
B514:82C3::0029:EC7A:0:EC72

D.
B514:82C3::0029:EC7A:EC72