The value of the expression (a b)2 + (b c)2 + (c a)2 is :(b c)(c a)(a b)(c a)(a b)(b c)

• A. 0
• B. 3
• C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td></tr><tr><td style="text-align: center;">3</td></tr></table>
• D. 2