38.A __________ is an up-and-down repetitive movement that repeats itself over a time span of more than 1 year.

A) prediction

B) seasonal pattern

C) trend

D) cyclical pattern

39.A __________ is an up-and-down repetitive movement that repeats itself over a time span of less than 1 year.

A) prediction

B) seasonal pattern

C) trend

D) cyclical pattern