Find the Greatest Common Factor of the Given Expressions $18 y d , 48 y d ^ { 6 } \text { and } 66 y ^ { 2 } d$

Multiple Choice

Find the greatest common factor of the given expressions. $18 y d , 48 y d ^ { 6 } \text { and } 66 y ^ { 2 } d$

A) $6 y d$
B) $48 d y$
C) $6 y$
D) $8 d y$
E) $3 y d$