Could you please solve the question below? $(1$ point$)$

A statistics practitioner took a random sample of $48$ observations from a population whose standard deviation is $24$ and computed the sample mean to be $98.$

Note: For each confidence interval, enter your answer in the form $($LCL$,$ UCL$).$ You must include the parentheses and the comma between the confidence limits$.$

A$.$ Estimate the population mean with $95\%$ confidence.

Confidence Interval $=$

B$.$ Estimate the population mean with $95\%$ confidence, changing the population standard deviation to $49$ ;

Confidence Interval $=$

C$.$ Estimate the population mean with $95\%$ confidence, changing the population standard deviation to $6$ ;

Confidence Interval $=$