Assertion: Converging passage is used for feeding luquid metal into a mould
Reason: Inhalation of air promotes blow holes in casting
a. Both A and R are true and R is the correct explanation of A.
b. Both A and R are true but R is NOT the correct explanation of A.
c. A is true but R is false.
d. A is false but R is true.
e. Both A and R are false.