阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
体裁：记叙文 话题：关爱动物 时间：7分钟
My husband and I had just opened up a pet sitting business earlier that year.Our customers had slowly risen from three to thirty a month.We were busy through those hot summer months，driving between visits.Our services were strictly held at the pet owner's home.It was almost too busy for the two of us，but we were making good money!
We asked pet owners new to our services to phone two weeks ahead so we had enough time to meet the owners and pets at their homes and make any following meeting before the owner leaves.
