A. if x1< x2 then f(x1) = f(x2)

B. if x1< x2 then f(x1) <f(x2)

C. if x1< x2 then f(x1) >f(x2)

D. A & C

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**B. if x1< x2 then f(x1) <f(x2)**

A. if x1< x2 then f(x1) = f(x2)

B. if x1< x2 then f(x1) <f(x2)

C. if x1< x2 then f(x1) >f(x2)

D. A & C

**View Answer**