If a - b = 3 and a(power 2) + b(power 2) = 23, find the value of ab.	Choose the correct choice from the following options.
A) 5	B) 8	C) 7	D) 10	E) 3

Rationale: "2 ab = ( a ( power 2 ) + b ( power 2 ) - ( a - b ) ( power 2 ) = 23 - 9 = 14 ab = 7 . answer is c ."
Answer: C