Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning

It started to rain at 2 o’clock and it is still raining

A. It has been raining at 2 o’clock

B. It has been raining since 2 o’clock  

C. It has been raining for 2 o’clock

D. It has been raining in 2 o’clock