During Saka-Satavahana period exchange rate of Suvarna to Silver Karshapana in Deccan was:

Correct option is B

The Saka-Satavahana period (approximately 1st century BCE to 2nd century CE) is generally associated with an exchange rate for gold to silver of 1:35 based on the ratio of the gold coin (Suvarna) to the silver coin (Karshapana).

This makes 1:35 the most commonly accepted answer derived from numismatic and literary sources for the ancient Indian economy of the period.

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The Saka-Satavahana period in the Deccan saw the use of several coins, but the standard ratio between the major gold and silver units was a key economic factor.

Suvarna: A gold coin, often weighing about 80 Rattis (approximately 8 grams).
Silver Karshapana: The standard silver coin (also called Pana or Purana), generally weighing about 32 Rattis (approximately 3.2 grams). A full Karshapana was often considered equivalent to about 16 silver Mashakas.

While the theoretical weight ratio of gold to silver fluctuated, the ratio of a single standard gold coin (Suvarna) to a single standard silver coin (Karshapana) during this broader ancient period, and often specifically cited for this era, is given as 1 Suvarna for 35 Karshapanas (or sometimes 40, depending on the specific source and dating).

This ratio (1:35) reflected the high value of gold relative to silver in the ancient Indian economy.