Considering the concrete mixtures below, answer the questions:

$-$Mixture A:

Cement $($kg$/$m$3)$: $300$

Fly Ash $($kg$/$m$3)$: $-$

Coarse Aggregate $($kg$/$m$3)$: $800$

Water $($kg$/$m$3)$: $150$

$-$Mixture B:

Cement $($kg$/$m$3)$: $240$

Fly Ash $($kg$/$m$3)$: $60$

Coarse Aggregate $($kg$/$m$3)$: $800$

Water $($kg$/$m$3)$: $150$

$-$Mixture C:

Cement $($kg$/$m$3)$: $300$

Fly Ash $($kg$/$m$3)$: $60$

Coarse Aggregate $($kg$/$m$3)$: $800$

Water $($kg$/$m$3)$: $150$

a$)$ Compare the workability of Mixtures A and B$.$

b$)$ Compare the early strengths of Mixtures A$,$ B$,$ and C$.$

c$)$ Compare the long$-$term strengths of Mixtures A$,$ B$,$ and C$.$