Different size assigned to multiple variables which are declared continually in one statement

Question

Trying to figure out why continued declaration is not a good Idea I suddenly realized the size assigned to following variables are not the same:

char const* const ALPHA, BETA;

printf("sizeof(ALPHA): %lu\n", sizeof(ALPHA));
printf("sizeof(BETA): %lu\n", sizeof(BETA));
printf("sizeof(char): %lu\n", sizeof(char));
printf("sizeof(char const* const): %lu\n", sizeof(char const *const));
printf("sizeof(char const*) %lu\n", sizeof(char const *));

output:

sizeof(ALPHA): 8
sizeof(BETA): 1
sizeof(char): 1
sizeof(char const* const): 8
sizeof(char const*) 8

Apparently BETA should be of type char const* not char const* const! but why it has the size of 1? is it really a char? How?

I expected that both variables be of the same size: 8