Using the data set below perform an Analysis of Covariance to determine the differences between the effects of eating margarine (A) or butter (B) on the cholesterol.

Lab #2 Data Set

ID	Before	After 4 Weeks	After 8 Weeks	Margarine
1	6.42	5.83	5.75	B
2	6.76	6.2	6.13	A
3	6.56	5.83	5.71	B
4	4.8	4.27	4.15	A
5	8.43	7.71	7.67	B
6	7.49	7.12	7.05	A
7	8.05	7.25	7.1	B
8	5.05	4.63	4.67	A
9	5.77	5.31	5.33	B
10	3.91	3.7	3.66	A
11	6.77	6.15	5.96	B
12	6.44	5.59	5.64	B
13	6.17	5.56	5.51	A
14	7.67	7.11	6.96	A
15	7.34	6.84	6.82	A
16	6.85	6.4	6.29	B
17	5.13	4.52	4.45	A
18	5.73	5.13	5.17	B

Explain the results in detail as a comment below the code.