Which of the following sentences contains at least one error?

a$.$ The administrative secretary to the president generally works with little or no supervision and must exercise good judgment and resourcefulness.

b$.$ As personal secretary to the president, the administrative secretary will attend, record, and maintain meeting minutes.

c$.$ Specialists are trained in the use of all word and data processing software used by the company.

d$.$ The annual financial report, along with all supporting documentation, should be audited annually using one of the perscribed methods.