So exciting . At least the grass was n't thick and easy to mow . There are some brown spots so the late summer effect and lack of rain is taking its toll . I was done in about an hour .

Available choices:
(A). I was excited because I finished mowing the lawn in less than an hour .;
(B). I was excited because I finished mowing the lawn in more than an hour .;
(C). I was excited because I finished mowing the lawn in about an hour .;
(D). I was excited because I finished mowing the lawn in exactly an hour .;
Q: Why was I so excited ?
(C).