A. 375 (cost) - 30 (shipping) = 345
345 / 5 = 69 [not true]
B. 375 (cost) - 40 (shipping) = 335
335/ 5 = 67 [could be true]
C. 375 (cost) - 50 (shipping) = 325
325 / 5 = 65 [could be true]
D. 375 (cost) - 60 (shipping) = 315
315 / 5 = 63
E. 375 (cost) - 70 (shipping) = 305
305 / 5 = 61 [could be true]