What is the angle of the sector at the centre of a circle?
I. The perimeter of the sector is 16 cm
II. Arc length of that sector is 10 cm

A

if the statement I alone can give the answer to the question.

B

if the statement II alone can give the answer to the question.

C

if the statements I and II together are necessary to give the answer to the question.

D

if the statements I and II both are not sufficient to answer the question and additional information is necessary