In the given question, a part of the sentence is printed in bold. Below the sentence alternatives to the bold part are given at (A), (B), (C) and (D) which may help improve the sentence. Choose the correct alternative.
Bitcoin could let transacting party remain anonymous, keep transactions very secure, and eliminate middlemen fees.

Options

A. would letting transactions parties remains
B. should lets transacting party remain
C. would let transacting parties remain
D. would have transacting parties remain