Which of the following igneous rocks is/are NOT characteristics of mid-ocean ridges

Which of the following igneous rocks is/are NOT characteristics of mid-ocean ridges

Question
Hi,

I need help answering these four questions

1. Which of the following igneous rocks is/are NOT characteristics of mid-ocean ridges? (I think the answer is D, but I wanted to confirm)

A. FInely crystalline basaltic rocks that form in upright columns known as dikes

B. Gabbro that solidified in a magma chamber

C. Pillow basalt

D. Andesite and Diorite

2. Which of the following is characteristic of continental rifts?

A. Some magmas are felsic and intermediate

B. Heat from hot, mafic magma can melt continental crust

C. Solid asthenosphere undergoes decompression melting

D. Choices A and B only

E. Choices A, B, and C

3. What occurs at mid-ocean ridges? (I think the answer is E, but I wanted to confirm)

A. oceanic crust is destroyed

B. continental crust is destroyed

C. all crust is destroyed by magma

D. continental crust is created

E. oceanic crust is created

4. Mid ocean ridges are elevated above the seafloor. The elevation of the seafloor:

A. increases away from the mid-ocean ridge because of expansion of the rocks due to heat

B. decreases away from the mid-oceanic ridge because of the cooling and contraction of the rocks.

C. increases away from the mid-ocean ridge because of the cooling and contraction of the rocks

D. decreases away from the mid-ocean ridge because of the expansion of the rocks due to heat}