Which of the following vector equations correctly represents the line passing through the point (4, 2.4, 3.1) and parallel to the vector 2i + 3j - k, using the parameter t?

A. r(t) = (4 + 2t)i + (2.4 + 3t)j + (3.1 - t)k
B. r(t) = (2 + 4t)i + (3 + 2.4t)j + (-1 + 3.1t)k
C. r(t) = 4i + 2.4j + 3.1k + t(2i + 3j - k)
D. r(t) = 2i + 3j - k + t(4i + 2.4j + 3.1k)