If x ≥ 0, y ≥ 0 and (x + y) ≤ 1, then the maximum value of (2x + 3y) is	Choose the most appropriate option.
A) 2	B) 3	C) 4	D) 5	E) 6
Sol.(b) It is given that x ≥ 0, y ≥ 0 and (x + y) ≤ 1.   x + y ≤ 1 =&gt; 2(x + y) ≤ 2 =&gt; 2x + 2y ≤ 2.   =&gt; 2x + 2y + y ≤ 2 + y   =&gt; 2x + 3y ≤  2 + 1= 
<gadget id="calculator"> 2 + 1</gadget>
<output>3</output>
3. (since y ≤ 1).   Answer 3
<result>B</result>
If x ≥ 0, y ≥ 0 and (x + y) ≤ 1, then the maximum value of (2x + 3y) is