A. 10 Billion years ago
B. 15 Billion years ago
C. 20 Billion years ago
D. 25 Billion years ago
Submitted by: FAZAL ULLAH
Correct Answer: 15 Billion years ago ✔
Last Updated: April 04, 2018
A. 10 Billion years ago
B. 15 Billion years ago
C. 20 Billion years ago
D. 25 Billion years ago
Submitted by: FAZAL ULLAH
Correct Answer: 15 Billion years ago ✔
Last Updated: April 04, 2018