Let a and b be real numbers. Find all vectors (2,a, b) orthogonal to (1, -5, -4). What are all the vectors that are orthogonal to (1, - 5, - 4)? Select the correct choice below and, if necessary, fill in any answer boxes within your choice. A. Vectors of the form (2,a, b), where (a, b)= (Type an ordered pair. Use a comma to separate answers as needed.) B. Vectors of the form (2,a, ), where a is any real number (Type an expression using a as the variable.) C. There are no vectors of the form (2,a, b), where a and b are real numbers.