For any positive integer [n] represents the sum of the integers from 1 to n. For example, [5] = 1 + 2 + 3 + 4 + 5 = 15. If \([1000] = a\) and \([10] = b\), what is the value of [1010]?
(A)\(a + b\) (B)\(a + l0b\) (C)\(a + b + 1000\) (D)\(a + b + 10,000\) (E)\(a + 1000b\)
D