I am having trouble with this astronomy question

Question

According to the present estimates, the Universe is about ______ years old.  

 

A.14 × 107

B.14 × 109

C.14 × 105

D.14 × 1011

Answer 1

The latest figure that I read was about 14 billion years, so that puts it at 14 x 10⁹ years, which is answer (B).