can you please help me with this using R ?

Was the average change in weight among those given Drug A significantly different from the average change in weight among those given Drug B, based on these data? Report your reject / do not reject decision and the p-value on which it was based.

subjID	age	initWeight	intervention	mo6Weight
101	23	75	Control	87
102	22	94	DrugB	69
103	23	105	Control	67
104	25	89	Control	83
105	24	64	DrugA	81
106	24	71	Control	71
107	23	69	Control	82
108	26	84	DrugB	59
109	25	95	DrugA	75
110	22	76	DrugA	80
111	20	86	DrugB	58
112	23	75	DrugA	76
113	20	75	DrugB	80
114	22	68	Control	67
115	21	75	DrugA	73
116	22	83	Control	82
117	22	89	DrugB	104
118	25	93	DrugA	65
119	24	92	DrugB	69
120	26	75	DrugA	86
121	24	96	DrugB	71
122	25	91	DrugB	69
123	25	71	DrugA	76
124	25	99	DrugA	59
125	25	73	Control	71
126	22	72	Control	82
127	24	80	DrugA	75
128	20	81	DrugA	64
129	23	90	DrugA	77
130	24	72	Control	81
131	21	92	Control	63
132	24	63	DrugB	81
133	24	75	Control	78