If k is an integer and 0.0010101 x 10^k is greater than 10, what is the least possible value of k? Choose the correct answer.
A) 2	B) 3	C) 4	D) 5	E) 6

Rationale: "0.0010101 * 10 ^ k > 10 we need to move the decimal point to the right 4 places to get 10.101 this is equivalent to multiplying by 10 ^ 4 . the answer is c ."
Answer: C