According to the model rules section 240.15, rules of professional conduct, licensed professional engineers are obligated to:______
A. ensure that design docuiments and suirveys are reviewed by a panel of licensed engineers prior to affixing a seal of approval
B. express public opinions under the direction of an employer or client regardless of knowledge of subject matter
C. practice by perfonning services only in the areas of their competence and in accordance with the cuurent standards of technical
D. offer. give or solicit services directly or indirectly in order to secure work or other valuable or political considerations