LCM of two numbers is 2079 and their HCF is 27. If one of the number is 189, the other number is :
[A]189
[B]216
[C]297
[D]584

297
$\because Second\ Number = \frac{HCF\times LCM}{First\ Number}$
$= \frac{27\times 2079}{189} = 297$
Hence option [C] is correct answer.