Please show how to solve in simplest way with work, if needed excel is acceptable:

A publicly traded firm had the following stock price series... Jan $61.22 Feb $56.69 Mar $57.87 Apr $62.80 May $64.22 Jun $63.98 With a 95% level of certainty, what is the range of returns for the stock? a.) -6.55% to 8.32% b.) -4.72% to 6.76% c.) -16.20% to 18.23% d.) -10.46% to 12.50% e.) -4.99% to 8.81%