Which three quadratic terms below are the best candidates for removal from the current model if you want to keep quadratic terms that are most likely to be relevant and you want to retain a hierarchical model? [Select three terms.]

• (X₁)²
• (X₂)²
• (X₃)²
• (X₄)²
• (X₅)²

Term	Coef	SE Coef	T-Value	P-Value	VIF
Constant	81.7	73.5	1.11	0.269
X1	3.86	1.34	2.88	0.005	256.81
X2	-1.60	1.50	-1.07	0.288	336.46
X3	-1.384	0.964	-1.44	0.154	284.11
X4	-0.757	0.560	-1.35	0.180	110.70
X5	-0.543	0.824	-0.66	0.512	148.01
DS	-0.6	54.9	-0.01	0.992	829.82
DW	42.1	89.8	0.47	0.640	2078.18
X1DS	0.824	0.418	1.97	0.052	288.73
X1DW	0.639	0.381	1.68	0.097	211.27
X2DS	-0.669	0.526	-1.27	0.206	464.64
X2DW	-0.082	0.421	-0.19	0.847	258.46
X3DS	0.376	0.243	1.55	0.125	164.44
X3DW	-2.26	1.45	-1.56	0.123	5249.70
X4DS	0.226	0.248	0.91	0.365	123.43
X4DW	0.768	0.221	3.47	0.001	95.07
X5DS	-0.133	0.209	-0.64	0.525	74.14
X5DW	-0.166	0.210	-0.79	0.430	61.16
X1sq	0.00427	0.00818	0.52	0.603	224.85
X2sq	0.00050	0.00961	0.05	0.959	312.67
X3sq	0.00199	0.00475	0.42	0.676	262.24
X4sq	0.00627	0.00317	1.98	0.051	96.83
X5sq	0.00500	0.00565	0.88	0.378	151.28
X3sqDW	0.01578	0.00714	2.21	0.029	1382.32