The correct option is A A- (i), B- (ii), C- (iii), D- (iv)
Stenotele is a type of nematocysts having distal end narrower than the base such as a stringing threat used for paralyzing the prey.
Volvent is lasso-string-like that is fired at prey and wraps around the cellular projection on the prey (for capturing).
A large glutinent is a sticky surface which is used to stick the prey.
A small glutinent is similar to large glutinent but smaller in size and is used for locomotion.
Thus, the correct answer is option (B), 'A-(i), B-(ii), C-(iii), D-(iv)'.