In a triangle $\mathrm{ABC}$ if $2 r_1=3 r_2=r_3$ then $\mathrm{a}: \mathrm{b}: \mathrm{c}=$

• Correct answer
  A

  $4: 3: 5$
• B

  $3: 4: 5$
• C

  $5: 3: 4$
• D

  $3: 5: 4$

Hence, the correct answer is option: 'A'.