JAMB Use of English 2008 Question 27

Select the option that best explains the information conveyed in the sentence: Thanks to that phone call, I was able to obtain the visa.

1. A.In spite of that phone call, I obtained the visa
2. B.It was because of that phone call that I obtained the visa
3. C.I am grateful to whoever phoned me, and I obtained the visa
4. D.If I had not received that phone call, I would not have obtained the visa.