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14. The following situations describe a linear inequality in two variables, EXCEPT? *



A. The sum of twenty-peso bills (t) and fifty-peso bills (f) is at most Php 520.

B. The difference between the weight of Diana (d) and Princess (p) is at least 20 kg.

C. Six times the length of a ruler (r) increased by 4 inches is less than the height of Don (h).

D. In a month, the total amount a family spends for food (f) and educational expenses (e) is Php 100,000.