A job opening has been announced. Which of these answer choices will be the best opening sentence in an application letter?

A、You seek a master Web engineer, and I need a job; we are perfect for each other!;
B、Dr. Matthew Wang, IT director at Qinghua University, told me that you have an opening for a Web engineer with experience in networking, data management, and innovations.;
C、Please consider this letter my application for your opening in the IT Department.;
D、Do you need a Web engineer with over three years of experience?