NMSU has decided that the carpet in BX102 needs to be replaced; it is frayed, several students have reported tripping on some of the rips, and the University's legal counsel is concerned that a serious injury could lead to a lawsuit against the University. The heavy-duty, stain-resistent carpet that is required is extremely expensive, $100 per square foot. NMSU commissions a study to determine how much carpet is required. They find 5 groups of ASTR110 graduates (who have been trained in measurement) who agree to make measurements for $10 each (students work cheap!). They also hire an outside group, the Center for Precision Measurements, to make a measurement; the CPM charges $500 for this service. After a month, the groups report their results:

Student group A	1205 sq. ft.
Student group B	1187 sq. ft.
Student group C	1242 sq. ft.
Student group D	1236 sq. ft.
Student group E	1100 sq. ft.
Center for Precision Measurement	1536 sq. ft.

What do you think NMSU should do?
    A ) buy 1550 sq. ft. of carpet
    B) buy 1250 sq. ft. of carpet
    C) commission another study
    D) ask class of critically-thinking ASTR110 to figure out what's going on (get prepared!)

When called for, hold up the letter of your choice.