The compounding equation is

. So

Divide by 3725

Daily =

=

= 1.6225
Monthly =

=

= 1.6218
Quarter =

=

= 1.6204
Yearly =

=

= 1.6141
The answer is yearly.
A_n= a₁+(n-1)d
a₁ first term
n terms
d distance between each value
a_n= 12+(405-1)(5)=2032
Factors of 12 : 1, 2, 3, 4, 6, 12
Factors of 20: 1, 2, 4, 5, 10, 20
In both lists of factors, 4 is in common. Therefore, the value of K is 4 because it can divide into both 12 and 20 without a remainder. 2 is also another possible value of K.