Mass. Gen. Laws ch. 231, § 89: Use at trial of answers to interrogatories

Section 89. The answers of a party to interrogatories filed may be read by the other party as evidence at the trial. The party interrogated may require the whole of the answers upon any one subject matter inquired of to be read, if a part of them is read; but if no part is read, the party interrogated shall in no way avail himself of his examination or of the fact that he has been examined.