question_answer

Replace the letters P, Q, R, S, T and U with the correct combination of terms.

A)  P-chert, Q-coal, R-conglomerate, S-limestone, T-gneiss, U-marble

B)  P-basalt, Q-obsidian, R-slate, S-phyllite, T-shale, U-flint

C)  P-basalt, Q-obsidian, R-conglomerate, S-limestone, T-rhyolite, U-scoria

D)  P-basalt, Q-obsidian, R-conglomerate, S-limestone, T-gneiss, U-marble

E)  None of these