With reference to base cross-linking, which, if any, of the following statements, is false?

The anti-cancer agent cisplatin causes a type of cross-linking between two guanine residues.

Base cross-linking means that covalent bonds form between two bases.

The cross-linked bases are on opposing DNA strands.

The anti-cancer agent cisplatin causes a type of cross-linking between two guanine residues.

Pyrimidine dimers are a type of base cross-linking that is commonly induced by excess exposure to sunlight.

With reference to base cross-linking, which, if any, of the following

1.	With reference to base cross-linking, which, if any, of the following statements, is false?
A.	Base cross-linking means that covalent bonds form between two bases.
B.	The cross-linked bases are on opposing DNA strands.
C.	The anti-cancer agent cisplatin causes a type of cross-linking between two guanine residues.
D.	Pyrimidine dimers are a type of base cross-linking that is commonly induced by excess exposure to sunlight.
Answer» C. The anti-cancer agent cisplatin causes a type of cross-linking between two guanine residues.