A new type of flare accelerant is tested. A control group of flares (X) that are currently used and a group of flares (Y) with the new accelerant are tested for their burning times (in minutes) and a 90% confidence interval for X - Y is calculated as (3.85, 4.75). Based on this confidence interval, what, if any, conclusions can we draw at a confidence level of 99%?

• A.Since all of the values in the interval are greater than 0, we can conclude that the mean burning time for the control group is longer than the mean burning time for the flares with the new accelerant.
• B.Since all of the values in the interval are greater than 0, we can conclude that the mean burning time for the control group is shorter than the mean burning time for the flares with the new accelerant.
• C.Since all of the values in the interval are greater than 0, we are unable to conclude that the mean burning times differ for the two types of flares.
• D.We are unable to draw conclusions at a 99% level of confidence without knowing the associated P-value.