Suppose the Ship of Theseus has undergone quite a bit of wear and tear. We decide to replace the wooden planks one by one. We store those planks. For fun, let's call the repaired ship B and suppose we reconstruct the stored planks into a new ship C. Theseus' ship, A, and the others B and C admit of the following:

A is neither identical to B or C.
A is identical to B or A is identical to C.
A is identical to both B and C.

Which of these options is most plausible? Why?