Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R). 

Assertion (A) : During pregnancy the levels of oestrogens, progestogens, cortisol, prolactin, thyroxine etc., increase in several folds.

Reason (R) : The increased production of these hormones is essential for supporting foetal growth, metabolic changes in the mother and maintenance of pregnancy.

In light of the above statements, choose the correct answer from the options given below.

During pregnancy, the levels of several hormones including estrogens, progestogens, cortisol, prolactin, thyroxine etc., increase significantly to support foetal growth and development, metabolic changes in the mother, and maintenance of pregnancy. This increase in hormone production is necessary for various physiological changes that occur during pregnancy, including the growth and development of the placenta, changes in the uterus and cervix, enlargement of breasts, and increased blood supply to the uterus.