Q. If a pair of angles placed back to back in tension are connected by one leg of each angle, the net effective area of the section, is

• (A) a - [b/{1 + 0.35 (b/a)}]
• (B) a + [b/{1 + 0.35 (b/a)}]
• (C) a - [b/{1 + 0.2 (b/a)}]
• (D) a + [b/{1 + 0.2 (b/a)}]