What is the object's acceleration, in Cartesian unit-vector form at t=5s? Your answer should be in meters per squared second, but do not enter units for your equation.
a. (3i + 4j - 2k) m/s²
b. (4i - 2j + 3k) m/s²
c. (2i - 3j + 4k) m/s²
d. (4i + 3j - 2k) m/s²