The correct answer is option A
3.2 m converted to centimeters is 320. So meters converted to centimeters is multiplied by 100. Ex.) 10m converted to centimeter is 1000.
Hope this helped :3
The answer is no, because the Rank Theorem tells us that rank A + dim Nul A = 12 . Since the rank can be at most 10, the null space has to have dimension at least two.