Choose all of the correct statements.
a. 6.3 × 10^7 is approximately 20 times larger than 3.1 × 10^8.
b. 19.6 × 10^6 is approximately 65 times larger than 3.0 × 10^5.
c. 8.6 × 10^-6 is approximately 41 times larger than 2.1 × 10^-5.
d. 5.9 × 10^-6 is approximately 28 times larger than 2.1 × 10^-7.
b. 19.6 × 10^6 is approximately 65 times larger than 3.0 × 10^5.
d. 5.9 × 10^-6 is approximately 28 times larger than 2.1 × 10^-7.