A postal order, either crossed or open is only valid for a period of? by Sunday | Jul 24 | Commerce WAEC | 0 comments A. 12 months B. 10 months C. 8 months D. 6 months E. 5 months Correct Answer: Option D – 6 months Users Also Read These:If T represents the gene for tallness while t…Would you include all or any of the following under…A crossed postal order is?A postal service that allows a company's customers…If red is dominant to white and homozygous red…