S1: Hormones have several functions in the body. P: They help to maintain the balance of biological activities in the body. Q: Insulin is released in response to the rapid rise in blood glucose level. R: On the other hand hormone glucagon tends to increase the glucose level in the blood. S: The role of insulin in keeping the blood glucose level within the narrow limit is an example of this function. S6: The two hormones together regulate the glucose level in the blood. Find the correct sequence of P, Q, R and S.