Which of the following shows that one is in deep love with his /her spouse? Sometimes I rally doubt whether there is love between my parents. Every day they are very busy trying to earn money in order to pay the high tuition for my brother and me.
选项：

A: Sending flowers every day.
B: Expressing words such as “I love you" to each other.
C: Taking care of each other while in sickness.
D: Giving gifts or sweet kisses to each other every day.