Suppose a circular queue of capacity (n – 1) elements is implemented with an array of n elements. Assume that the insertion and deletion operation are carried out using REAR and FRONT as array index variables, respectively. Initially, REAR = FRONT = 0. The conditions to detect queue full and queue empty are

Full: (REAR+1) mod n == FRONT, empty: (FRONT+1) mod n == REAR

Full: (REAR+1) mod n == FRONT, empty: REAR == FRONT

Full: REAR == FRONT, empty: (REAR+1) mod n == FRONT

Full: (FRONT+1) mod n == REAR, empty: REAR == FRONT

Suppose a circular queue of capacity (n – 1) elements is implemented

1.	Suppose a circular queue of capacity (n – 1) elements is implemented with an array of n elements. Assume that the insertion and deletion operation are carried out using REAR and FRONT as array index variables, respectively. Initially, REAR = FRONT = 0. The conditions to detect queue full and queue empty are
A.	Full: (REAR+1) mod n == FRONT, empty: REAR == FRONT
B.	Full: (REAR+1) mod n == FRONT, empty: (FRONT+1) mod n == REAR
C.	Full: REAR == FRONT, empty: (REAR+1) mod n == FRONT
D.	Full: (FRONT+1) mod n == REAR, empty: REAR == FRONT
Answer» B. Full: (REAR+1) mod n == FRONT, empty: (FRONT+1) mod n == REAR

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