USE R Program and show the code with explanations

Below is a dataset for 12 subjects, the 1st column is gender, the 2nd column is a treatment indicator (1=treatment and 0=placebo). T1, T2, and T3 are test results on 3 follow-up visits.

ID	Sex	Treatment	T1	T2	T3
1	0	0	94	23	61
2	0	1	46	92	97
3	0	0	40	65	43
4	0	1	64	15	8
5	0	0	6	34	59
6	0	1	30	37	10
7	1	0	47	85	88
8	1	1	36	41	3
9	1	0	92	60	95
10	1	1	1	100	47
11	1	0	32	66	62
12	1	1	25	43	93

4.a Reshape the data from the wide format to long format so that the repeated measures T1, T2, and T3 are on separates rows in one variable.

4.b Create boxplots for the test results by visit by gender.

4.c Suppose larger values of test result means worse results for the patients.Test to see whether the patients' situations are different in the first test by gender.