(e) Suppose

\\\\iota _(1),u_(2)inR

are upper bounds of a set

S

of real numbers.\ A.

|u_(1)|+|u_(2)|

must be an upper bound of

S

.\ B.

|_(1)_(2)|

must be an upper bound of

S

.\ C.

min{u_(1),u_(2)}

must be an upper bound of

S

.\ D.

max{u_(1),u_(2)}

must be an upper bound of

S

.

(e) Suppose t1,w2R are upper bounds of a set S of real numbers. A. v1+w2 must be an upper bound of S. B. 12 must be an upper bound of S. C. min{u1,u2} must be an upper bound of S. D. max{w1,v2} must be an upper bound of S