Mineral Growth in Magmas at the Surface with Temperatures Around $\circ$

Mineral growth in magmas at the surface with temperatures around 1000 to 1200 ^$\circ$ C occurs in the following way:

A) Iron and magnesium will link up with aluminum and the silicon-oxygen tetrahedron as magma temperature decreases to sequentially form four distinct and discontinuous families of minerals-olivine,pyroxene,amphibole,and biotite mica.
B) Calcium will combine with aluminum and the silicon-oxygen tetrahedron to begin forming the plagioclase feldspar family,a continuous and gradational series of minerals.
C) Both of these are correct.
D) Neither of these is correct.