After creating a new email address, gareth initially receives n emails per year. the number of emails received increases by 7% each year after that. the following expression represents the number of emails received after x years.

n(1+0.07)^x

which of the following best represents the expression?

a.
the product of the number of emails received initially and the factor of increase raised to a period of x years
b.
the product of the number of emails received initially and one plus the factor of decrease raised to the number of years that the amount of emails gareth received has increased
c.
the product of the number of emails received initially and one plus the factor of increase raised to the number of years that the amount of emails gareth received has increased
d.
the product of the number of emails received initially and the factor of decrease raised to a period of x years