Rule 3115. Objections to qualification of person taking deposition; competency; questions and answers. (a) Objection when deposition offered in evidence. Subject to the other provisions of this rule, objection may be made at the trial or hearing to receiving in evidence any deposition or part thereof for any reason which would require the exclusion of the evidence if the witness were then present and testifying. (b) Errors which might be obviated if made known promptly. Errors and irregularities occurring at the oral examination in the manner of taking the deposition, in the form of the questions or answers, in the oath or affirmation, or in the conduct of persons, and errors of any kind which might be obviated or removed if objection were promptly presented, are waived unless reasonable objection thereto is made at the taking of the deposition. (c) Disqualification of person taking deposition. Objection to the taking of a deposition because of disqualification of the person by whom it is to be taken is waived unless made before the taking of the deposition begins or as soon thereafter as the disqualification becomes known or could be discovered with reasonable diligence. (d) Competency of witnesses or admissibility of testimony. Objections to the competency of a witness or to the admissibility of testimony are not waived by failure to make them before or during the taking of the deposition, unless the ground of the objection is one which might have been obviated or removed if objection had been made at that time. (e) Form of written questions. Objections to the form of written questions are waived unless served in writing upon the party propounding the questions within the time allowed for serving succeeding questions or within three days after service.