Let u(t) = 4ti + (t - 1)j 3k and v(t) = e'i+9e j- e k. Compute the derivative of the following function. u(t) v(t) Select the correct choice below and fill in the answer box(es) to complete your choice. A. The derivative is the vector-valued function Di+O k. i+ B. The derivative is the scalar function. Let u(t) = 4ti + (t - 1)j 3k and v(t) = e'i+9e j- e k. Compute the derivative of the following function. u(t) v(t) Select the correct choice below and fill in the answer box(es) to complete your choice. A. The derivative is the vector-valued function Di+O k. i+ B. The derivative is the scalar function.