Which of the following are wrong statements? ( )

i) pulse rate is not equal to heart beat.

ii) The size of the heart is approximately the size of first.

iii) The heart is a pear shaped structure.

iv) Heart is located between the lungs.

A) (i) and (ii) B) (i) and (iii) C) (ii) and (iii) D) (iii) and (iv)​