…… posses dense cytoplasm and generally have more than one nucleus

Which of the following is correct statement

Describe the structure of pollen grain and explain the development of male gametophyte in it.

$A$ : The generative cell comes to lie freely in the cytoplasm of the tube cell.
$R$ : Cellulosic wall around generative cell is dissolved.

Which of the following statement is correct for the pollen tube