Read the following statements regarding Gymnosperm :-
$\left(A\right)$ The main plant body is sporophyte and heterosporous in nature.
$\left(B\right)$ Roots of some gymnosperm have algal (Blue green algae) association.
$\left(C\right)$ The multicellular female gametophyte bears two or more archegonia.
$\left(D\right)$ The male and female cones may be borne on the same tree or on different trees.

Arrange the following plants with their respective classes in the same order. Sphenopsida, Psilopsida, Pteropsida, Lycopsida, Gnetopsida

A) Selaginella
B) Equisitum
C) Sphagnum
D) Adiantum
E) Psilotum
F) Gnetum

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.

Reason R: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.

In the light of the above statements, choose the correct answer from the options given below: