With Regard to Economic Decision Making for Firms,the Short Run

Multiple Choice

With regard to economic decision making for firms,the short run is

A) a definite number of months.
B) a period over which the quantities of all factors of production and technology are variable.
C) a period over which the quantity of at least one significant factor of production is fixed.
D) a period over which the quantities of all factors of production are variable but technology is fixed.
E) less than one year.