Compare 4 x 105 and 5 x 103. a) 4 x 105 is 80 times larger than 5 x 103 b) 4 x 105 is 8 times larger than 5 x 103 c) 4 x 105 is twice as large as 5 x 103 d) 5 x 103 is 80 times larger than 4 x 105