(A) The sale of and the storage, use or other consumption of any commercial motor vehicle, as defined in subparagraphs (A) and (B) of subdivision (13) of subsection (a) of section 14-1, that is operating pursuant to the provisions of section 13b-88 or 13b-89, during the period commencing upon its purchase and ending one year after the date of purchase, provided seventy-five per cent of its revenue