$A, B_1, B_2, B_3$ are the events in a random experiment. If $P\left(B_1\right)=0.25, P\left(B_2\right)=0.30, P\left(B_3\right)=0.45, P\left(\frac{A}{B_1}\right)=0.05$, $P\left(\frac{A}{B_2}\right)=0.04, P\left(\frac{A}{B_3}\right)=0.03$, then $P\left(\frac{B_2}{A}\right)=$
- A
$\frac{6}{19}$
- B
$\frac{8}{19}$
- C
$\frac{12}{19}$
- D
$\frac{5}{19}$
✓ Correct answer: A
Want the full step-by-step reasoning?