The following 6 months of data were collected on maintenance cost and the number of machine hours in a factory: Month Maintenance Cost Machine Hours January $ 16,900 5,600 February 13,900 4,500 March 10,900 3,800 April 11,450 3,700 May 13,050 4,215 June 16,990 4,980 Select the correct set of high and low months. Oa. High: January, Low: April Ob. High: January, Low: March Oc. High: June, Low: March Od. High: June, Low: April