There are 25 flowers in an inflorescence of Allium. Each anther lobe of every stamen contains 60 pollen grains. What is the total number of pollen grains produced in its inflorescence?

Question

$\begin {array} {1 1} (1)\;4500 & \quad (2)\;9000 \\ (3)\;18000 & \quad (4)\;1500 \end {array}$