Q. The set strings of 0's and 1's with atmost one pair consecutive one's-

• (A) (0+1)*(01)(10)(0+1)*
• (B) (0+1)*(01)*(10)(0+1)*
• (C) (0+1)*(01)(10)*(0+1)*
• (D) (0+!)(01)*(10)*(0+1)