Detailed Instructions: In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Q: Problem: if d is the smallest positive integer such that 3,150 multiplied by d is the square of an integer , then d must be 
Options: ['a ) 2', 'b ) 5', 'c ) 6', 'd ) 7', 'e ) 14']
A:
e